Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5893279 | Lid-switch with out-of-balance detection | Spencer C. Schantz, David M. Howie | 1999-04-13 |
| 5594220 | Rotary switch with cam operated sliding contact engaging noble metal stationary contact bar surface | Kenyon A. Hapke, Spencer C. Schantz | 1997-01-14 |
| 5589671 | Rotary switch with spring stabilized contact control rotor | Kenyon A. Hapke, Spencer C. Schantz | 1996-12-31 |