Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4947559 | Air press system | Robert C. Lancaster, Gunther Weiskopf | 1990-08-14 |
| 4302647 | Membrane touch switches | James J. Kandler, Gregory D. Schwehr | 1981-11-24 |
| 4262182 | Fully illuminated backlit membrane touch switch | Gregory D. Schwehr | 1981-04-14 |