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Your search returned 89 patents.
( 705/69 in Current US Classification ) |
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| Patent ID | Title | Date Filed |
| 4969189 | Authentication system and apparatus therefor
| June 19, 1989 |
| 4947430 | Undeniable signature systems
| November 23, 1987 |
| 4926480 | Card-computer moderated systems
| May 24, 1988 |
| 4914698 | One-show blind signature systems
| July 24, 1989 |
| 4204113 | System for keeping account of predetermined homogenous units
| September 12, 1978 |
| 1 |
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