Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5767945 | Methods of changing the visibility of some characteristic or information to be included in a hard copy of a recorded image | Roger A. Fields | 1998-06-16 |
| 5229810 | Film information exchange system using dedicated magnetic tracks on film | Robert P. Cloutier, Michael L. Wash, Arthur A. Whitfield | 1993-07-20 |
| 5130745 | Film information exchange system using dedicated magnetic tracks on film | Robert P. Cloutier, Michael L. Wash, Arthur A. Whitfield | 1992-07-14 |
| 4931819 | Film cassette and method of assembling the same | Roger A. Fields | 1990-06-05 |
| 4913368 | Film cassette | — | 1990-04-03 |
| 4682870 | Apparatus for encoding a film cartridge used in a particular type camera | — | 1987-07-28 |