Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4893392 | Method of manufacturing an improved knob by injection molding | David K. Stricker, John B. Kuhn, William E. Chase | 1990-01-16 |
| 4783884 | Knob | David K. Stricker, John B. Kuhn, William E. Chase | 1988-11-15 |