Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5346298 | Cartridge retaining means | — | 1994-09-13 |
| 5193891 | Cartridge retaining means | — | 1993-03-16 |
| 4437738 | Optical rollfiche reader | William R. Limburg, Robert Nordmeyer, Jay Smith, III | 1984-03-20 |