| Patents for G06K 5 - Methods or arrangements for verifying the correctness of markings on a record carrier; Column-detection devices (6,653) |
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| 09/28/1982 | US4352096 Device for providing a modulo-n check character |
| 07/13/1982 | US4339208 Optical sensing of wire matrix printers |
| 05/27/1982 | WO1982001778A1 Method and device for the marking and/or identification of a data medium |
| 05/11/1982 | US4329572 Check-digit printing means |
| 05/11/1982 | US4328746 Weighted modulus numbering apparatus |
| 04/15/1982 | WO1982001163A1 Dot matrix printer |
| 03/23/1982 | US4321689 System for controlling the delivery of data from a data source |
| 02/09/1982 | CA1118098A1 Identification system safeguarded against misuse |
| 10/20/1981 | US4296332 Sprocket hole sensing detector for moving translucent paper sheets |
| 10/20/1981 | CA1110913A1 Check-digit printing means |
| 09/22/1981 | US4291384 Tape gauge system |
| 09/08/1981 | US4288780 Pattern recognition system |
| 06/17/1981 | EP0030237A1 Process for protecting sound recording carrier and the labels and/or packages thereof against counterfeiting |
| 12/11/1980 | WO1980002757A1 Process for protecting sound recording carrier and the labels and/or packages thereof against counterfeiting |
| 12/02/1980 | US4236446 Check-digit printing means |
| 07/08/1980 | US4211918 Method and device for identifying documents |
| 06/10/1980 | CA1079401A1 Secure property document and system |
| 05/27/1980 | US4204637 Ticket and reading device |
| 05/13/1980 | US4202265 Controlling the operation of numbering machines |
| 04/16/1980 | EP0009799A1 Device for representing and/or producing a modulus n check symbol next to a multiple-position sequence of characters |
| 04/01/1980 | CA1074917A1 Card validating apparatus |
| 03/25/1980 | US4194685 Verifying insertion system apparatus and method of operation |
| 11/27/1979 | US4175693 Method for enhancing the reliability of output data from a label reader |
| 11/20/1979 | CA1066803A2 Coded record and methods of and apparatus for encoding and decoding records |
| 10/30/1979 | US4172553 Apparatus for gauging hole position in punched material |
| 10/02/1979 | CA1063342A1 Code symbol inspection arrangement using a windowed gauge |
| 07/10/1979 | US4160901 Coincidence testing method for enhancing the reliability of output data from a label reader |
| 04/24/1979 | CA1053372A1 Validator for scrip |
| 04/10/1979 | US4149070 Code symbol inspection arrangement |
| 09/26/1978 | CA1039409A2 Recognition unit for optical character reading system |
| 09/26/1978 | CA1039404A1 Credit card and identity verification system |
| 05/23/1978 | US4091271 Validator for scrip |
| 05/09/1978 | US4088877 Sequence checking device |
| 02/14/1978 | US4074115 Method and apparatus to read-in bar-coded information |
| 01/10/1978 | US4068212 Method and apparatus for identifying characters printed on a document which cannot be machine read |
| 12/27/1977 | US4065752 Check digit generation and verification apparatus |
| 11/22/1977 | US4059748 Computer accounting system |
| 07/12/1977 | US4035614 Card validating apparatus |
| 05/31/1977 | US4027141 Apparatus for encoding a magnetic label |
| 05/03/1977 | US4020536 Method of constructing credit cards for automatic vending equipment and credit purchase systems |
| 04/26/1977 | US4020357 Signal processing for print scanners |
| 04/12/1977 | US4017834 Credit card construction for automatic vending equipment and credit purchase systems |
| 03/22/1977 | US4013997 Error detection/correction system |
| 03/22/1977 | US4013894 Secure property document and system |
| 03/22/1977 | US4013216 Punch check apparatus |
| 11/09/1976 | US3990558 Method and apparatus for preparing and assessing payment documents |
| 10/26/1976 | US3988571 Document reject reentry |
| 06/01/1976 | US3961164 UPC encodation verifier |
| 05/18/1976 | US3958270 Document-marking machine |
| 03/30/1976 | US3947661 Access authenticating system |
| 03/23/1976 | US3946202 Information writing device |
| 03/09/1976 | US3942896 Measuring magnifier with special reticle |
| 02/10/1976 | US3937926 Validator for scrip |