Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4613876 | Laser recording system | — | 1986-09-23 |
| 4281895 | Quick change lens mount | — | 1981-08-04 |
| 4266855 | Quick change lens system | — | 1981-05-12 |
| 4200005 | Pedal having an improved foot-retaining strap means | — | 1980-04-29 |
| 4185913 | Apparatus for recording multiple, superimposed, independent images on microfilm | Stephan K. Ammann | 1980-01-29 |