Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5568215 | Film cartridge holder and adapter unit | John M. Haugen, Sr., Kalvin L. Holler, Charles T. Higgins | 1996-10-22 |
| 5016752 | Picture and negative storage container | — | 1991-05-21 |
| 4982489 | Tool set and method for gauging and restoring concentricity between axial sections of a workpiece bore | — | 1991-01-08 |