Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4398679 | Externally hooked storage spool for rotary winding on an unwinding | Erik Altmann | 1983-08-16 |
| 4333615 | Film cassette for roll films | Erik Altmann | 1982-06-08 |
| 4200247 | Cassette for roll films, with a catch for preventing drawing in of the end of the film | Erik Altmann | 1980-04-29 |
| 4190216 | Narrow gauge film cassette | Johannes Tabel | 1980-02-26 |
| 4181271 | Spool with external hooks for winding material in the form of tape | Erik Altmann | 1980-01-01 |