| 8771591 |
Silver alloy with high tarnish resistance |
— |
2014-07-08 |
| 8479009 |
Wearable time-bracketed video authentication |
Mavis Donkor |
2013-07-02 |
| 8136370 |
Silver-palladium alloy |
— |
2012-03-20 |
| 7792296 |
Access-controlled encrypted recording method for site, interaction and process monitoring |
— |
2010-09-07 |
| 7477740 |
Access-controlled encrypted recording system for site, interaction and process monitoring |
— |
2009-01-13 |
| 5764769 |
Digital recording system with time-bracketed authentication by on-line challenges and method of authenticating recordings |
David P. DiVincenzo, Ralph Linsker |
1998-06-09 |
| 5680455 |
Digital signature generator /verifier/ recorder (DS-GVR) for analog transmissions |
Ralph Linsker |
1997-10-21 |
| 5598473 |
Digital signature generator/verifier/recorder (DS-GVR) for analog transmissions |
Ralph Linsker |
1997-01-28 |
| 5515438 |
Quantum key distribution using non-orthogonal macroscopic signals |
Stephen J. Wiesner |
1996-05-07 |
| 5307410 |
Interferometric quantum cryptographic key distribution system |
— |
1994-04-26 |
| 4886106 |
Die cast machine with a turret |
— |
1989-12-12 |
| 4382440 |
Smoke and pollutant filtering device |
Nancy J. Kapp |
1983-05-10 |
| 4228587 |
Combined razor holder and shaving fluid dispenser |
— |
1980-10-21 |
