| Patents for H04M 17 - Prepayment telephone systems (5,258) |
|---|
| 12/21/1993 | US5272748 Enhanced speed calling |
| 12/21/1993 | US5272747 Mobile pay telephone system |
| 12/14/1993 | US5270508 For use in pay telephones to detect the removal of a coin box |
| 12/08/1993 | EP0572991A2 A method of processing prepaid telephone calls |
| 11/24/1993 | EP0570776A1 Method and apparatus for controlled credit facility in telephone subset |
| 11/24/1993 | EP0166745B2 Fraud prevention in an electronic coin telephone set |
| 11/23/1993 | US5265155 Method and apparatus for prepayment of telecommunication connections in a telecommunication switching network |
| 11/16/1993 | US5263080 Telephone message storage system with out-of-band signalling |
| 10/28/1993 | WO1993021740A1 Coin cashing system for mobile telefony |
| 10/28/1993 | WO1993021718A1 Toll call telephone service center |
| 10/28/1993 | WO1993021712A1 Electronic security system |
| 10/28/1993 | CA2111353A1 Coin cashing system for mobile telefony |
| 09/29/1993 | WO1993020644A1 Communication system with call charge information stored in handset |
| 09/29/1993 | EP0527886A4 Electronic security system |
| 09/22/1993 | EP0561578A2 Coin storage structure |
| 09/22/1993 | EP0561124A1 Device for establishing forgery attempts of a chip card reader/writer |
| 09/18/1993 | CA2086905A1 Device for detecting attempts at fraud on an apparatus for reading and writing on a chip card |
| 09/16/1993 | WO1993018608A1 Public telephone power consumption reducing method and device |
| 08/26/1993 | DE4205569A1 Telephone charge card combined with business card - has built in electronic credit memory that may be used to access name on business card |
| 08/03/1993 | US5233647 System for operating public modular telephones |
| 07/22/1993 | DE4201197A1 Information or service accessing - using chip cards inserted separately into, e.g. card telephone connected to public or private telecommunications system for contact with banks or other data centres |
| 07/14/1993 | EP0550618A1 Cordless telephone with internal debit and credit memory |
| 07/13/1993 | CA1320293C Repertory telephone dialer with remote billing capability |
| 07/08/1993 | WO1993013619A1 Control and monitoring system for a public payphone |
| 07/07/1993 | EP0549799A1 System for using telephone cards |
| 07/06/1993 | US5226073 Telephone network credit card calling apparatus and method of telephone network operation with credit card companies |
| 06/24/1993 | WO1993012606A1 Real-time information system for cellular telephones |
| 06/22/1993 | US5222122 Payphone having master and slave modes |
| 06/17/1993 | DE4141001A1 Hang up hook for hand set of coin box telephone - has U=shaped hook arm pivotably attached to wall for movement between two operating positions which acts on switch inside hand set |
| 06/15/1993 | US5220593 Cellular radiotelephone credit card paystation method |
| 06/15/1993 | US5220501 Method and system for remote delivery of retail banking services |
| 06/08/1993 | US5218633 Enhanced access to telecommunications network |
| 06/01/1993 | US5216707 Circuit for firing paystation coin relay using power derived from telephone line tip/ring voltage |
| 05/30/1993 | WO1993011626A1 Apparatus for accepting and retaining a smart card |
| 05/19/1993 | CN2134008Y Public telephone with calling card |
| 05/11/1993 | CA1317638C Mobile pay telephone system |
| 05/05/1993 | EP0540234A2 Monitoring of charges debited to an account having an assigned limit |
| 04/28/1993 | EP0538933A1 Communications receiver employing a prepaid identity card |
| 04/08/1993 | DE4133149A1 Telephone subscriber's appts. with card reader - used to enter data into group structured memory with connection to card control centre |
| 04/08/1993 | DE4133148A1 Telephone subscriber's appts. with card reader - coupled to memory with group information storage and having control unit for activation of receiver connection |
| 04/08/1993 | DE4133147A1 Telephone subscriber's appts. with card reader - allowing access via central credit card centre and data handling by group organised memory |
| 04/07/1993 | EP0535784A2 Message transmission system |
| 03/09/1993 | US5193113 Protective plate for paystation anti-stuffing device |
| 03/09/1993 | CA1314318C Integrated accounting system |
| 03/02/1993 | US5191507 Polarity inverting circuit |
| 02/24/1993 | EP0527886A1 Electronic security system |
| 02/18/1993 | WO1993003571A1 Method and apparatus for prepayment of telecommunication connections in a telecommunication switching network |
| 02/16/1993 | US5187740 Method and apparatus for telephone call reorigination |
| 02/16/1993 | US5187739 Answer supervision circuit for paystation telephone with non-muted microphone |
| 02/16/1993 | US5187738 Telephone relay cover |
| 02/03/1993 | EP0526421A2 Rotating drum magazine having horizontal axis for the coin or token collecting and managing unit of an automatic apparatus for dispensing prepaid goods or services |
| 02/03/1993 | EP0526118A2 Dynamic pricing method and apparatus for communication systems |
| 01/19/1993 | WO1993001987A1 Container for enclosing contents therein with calendar function and vending machine for said container |
| 01/19/1993 | WO1993001943A1 System for using telephone cards |
| 01/19/1993 | CA2091674A1 Container for sealedly packing content having a calendar function and automatic vending machine for said container |
| 01/19/1993 | CA2089872A1 System for using telephone cards |
| 01/19/1993 | CA1312971C Low power control apparatus for a coin operated telephone |
| 01/19/1993 | CA1312970C Method and apparatus for electronic payphone open switch interval management |
| 12/24/1992 | DE4120079A1 Fraudulent call prevention method for multifrequency-dialling telephone station - delaying activation of microphone while called number is identified as not on exclusion list |
| 12/22/1992 | US5173594 System for printing personalized charge-card service receipts at remote locations |
| 12/01/1992 | US5168518 Coin tone validator for telephone paystations |
| 11/24/1992 | CA2033880C Billing system for telephone signaling network |
| 11/10/1992 | US5163086 Telephone network credit card calling apparatus and method of operation to determine validation and fraudulent use of credit cards in placing telephone calls |
| 11/03/1992 | CA1309785C Line interface unit |
| 10/19/1992 | WO1992019066A1 Method and apparatus for providing answer supervision and an autonomous pay telephone incorporating the same |
| 10/19/1992 | CA2108581A1 Method and apparatus for providing answer supervision and an autonomous pay telephone incorporating the same |
| 10/13/1992 | US5155765 Telephone paystation lower housing armor |
| 10/08/1992 | DE4111192A1 Telephone credit card control system - is coupled to multifrequency receiver and linked to both call cores |
| 10/06/1992 | US5153907 Telephone system gateway interface |
| 09/23/1992 | EP0504287A1 Method and system for remote delivery of retail banking services |
| 09/22/1992 | US5150404 Public telephone volume control |
| 09/22/1992 | US5150403 Coin fraud prevention system for coin telephones |
| 09/22/1992 | US5150399 Public telephone interface and method of operating the same |
| 09/16/1992 | CN1018323B Low power control apparatus for coin operated telephone |
| 09/15/1992 | US5148476 Telephone anti-theft device |
| 09/08/1992 | US5146492 Anti-explosive return coin discharge unit for the cabinet of a coin operable telephone |
| 09/08/1992 | CA1307333C Anti-fraud device for use with a coin operated telephone instrument |
| 09/02/1992 | EP0501697A2 Mediation of transactions by a communications system |
| 09/01/1992 | US5144649 Cellular radiotelephone credit card paystation method |
| 08/18/1992 | US5140317 Electronic security system |
| 08/12/1992 | EP0498135A2 Modular public telephones adaptation unit |
| 08/11/1992 | US5138650 Cordless telephone with internal debit and credit memory |
| 08/11/1992 | US5138648 Public modular-telephone management system |
| 07/29/1992 | EP0496588A1 Coin mechanisms |
| 07/28/1992 | US5134651 Method and apparatus for providing answer supervision and an autonomous pay telephone incorporating the same |
| 07/28/1992 | US5134646 Voice messaging method and apparatus for pay phone telephone systems |
| 07/21/1992 | US5133005 Line powered pay telephone with power management |
| 07/15/1992 | EP0494530A2 System for accessing amenities through a public telephone network |
| 07/14/1992 | US5131035 Apparatus and method for protection of coin operated telephones |
| 07/14/1992 | US5131027 Short time validity storage |
| 07/12/1992 | CA2058657A1 System for accessing amenities through a public telephone network |
| 07/09/1992 | WO1992011725A1 A telecommunications terminal |
| 07/08/1992 | EP0493895A1 Telephone network credit card calling apparatus and method of operation |
| 07/08/1992 | EP0493894A1 Telephone network credit card calling apparatus and method of operation |
| 06/17/1992 | CN1062063A Public telephone set |
| 06/16/1992 | CA1303764C Apparatus for optically coupling a terminal unit to the public telephone network through a pay telephone instrument and the like |
| 05/20/1992 | EP0486160A2 Multi-purpose public facsimile transmission terminal |
| 04/30/1992 | WO1992007327A1 Telecommunications booth and method of use |
| 04/28/1992 | US5109412 Hand-held pay station telephone dispenser and cord retractor |
| 04/28/1992 | US5108315 Pay telephone station repair technician's adapter |