Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4738949 | High-security identification card obtained by thermal dye transfer | Stephen D. Marshall, David E. Wenschhof | 1988-04-19 |
| RE31573 | Film cartridge assembly with pressure plate | — | 1984-05-01 |
| 4309096 | Film cartridge assembly with pressure plate | — | 1982-01-05 |
| 4268145 | Film cartridge assembly | Frederick W. Harvey, Stephen L. Sikorski | 1981-05-19 |
| 4255034 | Film retention in cartridge assembly | Frederick W. Harvey | 1981-03-10 |
| 4212673 | Film unit assembly | Karl Sperber, Donald G. Tidd | 1980-07-15 |
| 4208117 | Film packet | Frederick W. Harvey | 1980-06-17 |
| T994002 | Battery package and assembly | Frederick W. Harvey, Norman E. Hess | 1980-05-06 |
| 4194822 | Photographic film cartridge assembly and camera | — | 1980-03-25 |
| T990007 | Electrochemical cell and battery | — | 1980-01-01 |