Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4607926 | Apparatus for processing and/or projecting transparency film assemblages | — | 1986-08-26 |
| 4600680 | Transparency film assemblage | — | 1986-07-15 |
| 4371249 | Film processing kit | Frank M. Czumak | 1983-02-01 |
| 4334750 | Film assemblage having film releasably attached to film spool | — | 1982-06-15 |