Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4506124 | Push-push switch | David W. Rupnik, David T. Shaffer | 1985-03-19 |
| 4496802 | Single in-line package switch | David T. Shaffer | 1985-01-29 |
| 4268728 | Switch encoder | — | 1981-05-19 |