Johnson; Everett A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Johnson; Everett A..The latest application filed is for "access security control".
- Johnson; Everett A. - Park Ridge IL
Trademarks
| Patent | Date |
|---|---|
| Access security control Grant 4,599,509 - Silverman , et al. July 8, 1 | 1986-07-08 |
| Access security control Grant 4,464,566 - Silverman , et al. August 7, 1 | 1984-08-07 |
| Access security control Grant 4,395,628 - Silverman , et al. July 26, 1 | 1983-07-26 |
| Access security control Grant 4,303,852 - Silverman , et al. December 1, 1 | 1981-12-01 |
| Access security system Grant 4,213,038 - Silverman , et al. * July 15, 1 | 1980-07-15 |
| Access authentication system Grant 4,150,781 - Silverman , et al. April 24, 1 | 1979-04-24 |
| Holographic systems having reference beam coded holograms Grant 4,018,503 - Silverman , et al. April 19, 1 | 1977-04-19 |
| Access control system Grant 3,999,042 - Silverman , et al. * December 21, 1 | 1976-12-21 |
| Access authenticating system Grant 3,947,661 - Silverman , et al. March 30, 1 | 1976-03-30 |
| Holographic systems using partially overlapping hologram record Grant 3,915,551 - Silverman , et al. * October 28, 1 | 1975-10-28 |
| Access Control System Grant 3,829,661 - Silverman , et al. August 13, 1 | 1974-08-13 |
| Authentication Of Access To Information Records Grant 3,818,190 - Silverman , et al. June 18, 1 | 1974-06-18 |
| Holographic Systems Grant 3,807,828 - Johnson , et al. * April 30, 1 | 1974-04-30 |
| Method And Apparatus For Authentication Of Information Records Grant 3,677,465 - Johnson , et al. July 18, 1 | 1972-07-18 |
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