| Patents for H04R 11 - Transducers of moving-armature or moving-core type (1,828) |
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| 09/15/1998 | US5809158 Transducer |
| 09/02/1998 | CN1192117A Electroacoustic transducer |
| 08/13/1998 | WO1998035530A1 Microphone with modified high-frequency response |
| 08/06/1998 | WO1998034320A2 Electro-dynamic inertial vibration exciter |
| 08/06/1998 | CA2279602A1 Electro-dynamic exciter |
| 07/01/1998 | EP0851710A1 Electroacoustic transducer |
| 06/10/1998 | EP0847226A1 Transducer, in particular transducer for hearing aids |
| 06/03/1998 | EP0845920A2 Electro-mechanical and acoustic transducer for portable terminal unit |
| 05/26/1998 | US5757947 Transducer |
| 04/30/1998 | WO1998018293A1 Three-axis seismic vibrator |
| 04/30/1998 | CA2266099A1 Three-axis seismic vibrator |
| 04/22/1998 | CN1179692A Speaker apparatus |
| 03/05/1998 | DE19635119A1 Vibrational excursion detection device of vibration generator e.g. for conveyors of bulk goods and small items |
| 01/13/1998 | US5708721 Coil assemblies |
| 01/07/1998 | EP0667093B1 Electroacoustic transducer |
| 10/30/1997 | DE19710736A1 Signalumformer für ein Saitenmusikinstrument Transducer for a stringed musical instrument |
| 10/14/1997 | US5675885 Method of winding a coil for an electroacoustic transducer |
| 09/15/1997 | CA2200018A1 Transducer for a stringed musical instrument |
| 09/10/1997 | CN2262326Y Microphone with direct dialing freqency response adjuster |
| 09/09/1997 | US5666328 Three axis seismic vibrator |
| 08/20/1997 | CN1157544A Microphone |
| 07/16/1997 | EP0784415A1 Electroacoustic transducer |
| 07/15/1997 | US5649020 Tactile alerting system |
| 07/08/1997 | US5647013 Electroacostic transducer |
| 06/24/1997 | US5642333 Electroacoustic transducer and method of winding coil therein |
| 06/10/1997 | US5637840 Miniaturized high power speaker |
| 04/15/1997 | US5621293 Variable-reluctance servocontrolled linear motor |
| 03/12/1997 | CN2249478Y Stripelike high-power high-frequency loudspeaker |
| 03/11/1997 | US5610989 Coil assemblies |
| 02/06/1997 | WO1997004618A1 Electronic driver for an electromagnetic resonant transducer |
| 01/29/1997 | CN1141553A Portable telephone with flip stand speaker or hinge doors and having speaker therein |
| 09/12/1996 | DE19508200A1 Bass loudspeaker for hi-fi system |
| 09/04/1996 | EP0646307B1 Water-resistant transducer housing with hydrophobic vent |
| 07/16/1996 | US5537472 Portable telephone with flip stand or hinged doors and having speaker therein |
| 06/04/1996 | US5524061 Dual mode transducer for a portable receiver |
| 03/06/1996 | EP0505382B1 Coil assemblies |
| 02/21/1996 | CN2220710Y Radial magnet loudspeaker of radial magnetic field |
| 01/24/1996 | CN1115486A Electro-magnetic acoustic exchanger and method for winding coil of same |
| 12/13/1995 | EP0686985A1 Coil assemblies |
| 12/06/1995 | CN2214724Y Internal magnet speaker |
| 09/20/1995 | CN2208304Y Internal magnetic loudspeaker |
| 08/30/1995 | EP0669785A1 Electroacoustic transducer and method of winding coil therein |
| 08/16/1995 | EP0667093A1 Electroacoustic transducer |
| 08/01/1995 | US5438627 Reactance-mass actuator |
| 04/05/1995 | EP0646307A1 Water-resistant transducer housing with hydrophobic vent. |
| 01/11/1995 | EP0490930B1 Electromagnetic resonant vibrator |
| 08/10/1994 | EP0609873A2 Moving magnet motor |
| 08/09/1994 | US5337364 Communication device for transmitting audio information to a user |
| 07/26/1994 | US5333205 Microphone assembly |
| 05/17/1994 | US5313127 Moving magnet motor |
| 05/11/1994 | WO1994010817A1 Electroacoustic transducer |
| 03/29/1994 | US5299176 Balanced armature transducers with transverse gap |
| 02/24/1994 | DE4227641A1 Audio frequency signal transmission device for inductive hearing device - uses induction coil provided by conductor loop supplied from annular core transformer |
| 01/06/1994 | WO1994000961A1 Water-resistant transducer housing with hydrophobic vent |
| 12/01/1993 | CN2148450Y Excited-field plane loudspeaker |
| 09/21/1993 | CA2056990C Electromagnetic resonant vibrator |
| 09/21/1993 | CA2027265C Magnetically shielded electromagnetic acoustic transducer |
| 09/15/1993 | EP0559697A1 Communication device for transmitting audio information to a user |
| 07/27/1993 | US5230328 Electromagnetic acoustic pressure pulse source |
| 06/30/1993 | EP0548579A1 Balanced armature transducers with transverse gap |
| 06/22/1993 | US5222050 Water-resistant transducer housing with hydrophobic vent |
| 06/02/1993 | EP0544576A1 Variable reluctance linear servomotor |
| 06/01/1993 | US5216723 Permanent magnet transducing |
| 03/09/1993 | US5193116 Hearing and output transducer with self contained amplifier |
| 02/24/1993 | EP0490930A4 Electromagnetic resonant vibrator |
| 10/14/1992 | EP0508570A2 Permanent magnet transducer |
| 09/30/1992 | EP0505382A1 Coil assemblies. |
| 09/12/1992 | CA2061444A1 Permanent magnet transducer |
| 07/22/1992 | CN1063009A Communication device for transmitting audio information to user |
| 06/24/1992 | EP0490930A1 Electromagnetic resonant vibrator. |
| 05/29/1992 | WO1992009251A1 Communication device for transmitting audio information to a user |
| 05/29/1992 | CA2096974A1 Communication device for transmitting audio information to a user |
| 04/21/1992 | US5107540 Electromagnetic resonant vibrator |
| 11/26/1991 | US5068901 Dual outlet passage hearing aid transducer |
| 11/06/1991 | EP0455203A2 Dual outlet passage hearing aid transducer |
| 11/02/1991 | CA2040004A1 Dual outlet passage hearing aid transducer |
| 08/21/1991 | CN2083372U Dc electronic loud-speaker |
| 06/22/1991 | WO1991010243A1 Coil assemblies |
| 05/02/1991 | EP0424916A2 Magnetically shielded electromagnetic acoustic transducer |
| 03/08/1991 | WO1991003914A1 Electromagnetic resonant vibrator |
| 01/31/1991 | DE3924708A1 Mechano-cutaneous sound transmission using multiple spatial patterns - excited by vibrating magnets in concealed pectoral appts. with microphone and control unit worn as brooch |
| 09/11/1990 | US4956868 Magnetically shielded electromagnetic acoustic transducer |
| 02/13/1990 | US4901357 Electromagnetic transducer |
| 09/26/1989 | CA1261462A1 Audio-frequency electromechanical vibrator |
| 02/21/1989 | US4807295 Loudspeaker |
| 01/31/1989 | US4802081 Elongated phonograph pick-up head with snap-together construction |
| 11/15/1988 | USRE32785 Audio-frequency electromechanical vibrator |
| 10/26/1988 | CN87205199U Interference-resisting microphone |
| 10/12/1988 | CN87201664U Multi-functional all-electronic spiral horn with integrated circuits |
| 09/21/1988 | CN87212583U Sucking disc type recording plug for telephone |
| 08/24/1988 | CN88201308U Multi tone contactless electronic loudspeaker |
| 08/04/1988 | DE3701595A1 Induction-type loudspeaker |
| 08/03/1988 | CN88203072U A.c. horn for small tractor |
| 03/01/1988 | US4728934 Tactile stimulation device for hearing-impaired individuals |
| 12/23/1987 | CN86210295U Dc electric loudspeaker |
| 07/14/1987 | US4680492 Audio-frequency electromechanical vibrator |
| 03/10/1987 | CA1218939A1 Audio-frequency electromechanical vibrator |
| 02/17/1987 | US4644518 Circuit connection for coils wound on yoke of an electromagnetic pickup cartridge |
| 01/06/1987 | US4635287 Audio-frequency electromechanical vibrator |
| 12/17/1986 | CN85105338A Gramophone needle module on pickup seat |