Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4453779 | Adjustable variable load control valve device | — | 1984-06-12 |
| 4404987 | Cap nut for a trip cock device including a detent arrangement for overriding automatic reset | William Stewart Johnston | 1983-09-20 |