Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4476714 | Engine oil level sensor | Willis E. Rieman | 1984-10-16 |
| 4451814 | Non-resettable thermal fuse | Willis E. Rieman | 1984-05-29 |
| 4365226 | Plug-in type fuse | Willis E. Rieman | 1982-12-21 |
| 4352082 | Thermal fuse | Willis E. Rieman | 1982-09-28 |