Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4599509 | Access security control | Daniel Silverman | 1986-07-08 |
| 4464566 | Access security control | Daniel Silverman | 1984-08-07 |
| 4395628 | Access security control | Daniel Silverman | 1983-07-26 |
| 4303852 | Access security control | Daniel Silverman | 1981-12-01 |
| 4213038 | Access security system | Daniel Silverman | 1980-07-15 |