Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4347973 | Internal combustion engine coolant system, thermostat therefor and methods of making the same | — | 1982-09-07 |
| 4198030 | Fluid operated valve positioner | Richard F. Caldwell | 1980-04-15 |