Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4768550 | Manifold fitting for a compressed air tank | Michael J. Purvis, Paul F. Ross, II | 1988-09-06 |
| 4705076 | Manifold fitting for a compressed air tank | Michael J. Purvis, Paul F. Ross, II | 1987-11-10 |
| 4616677 | Manifold fitting for a compressed air tank | Michael J. Purvis | 1986-10-14 |
| 4321940 | Unloader/check valve | Michael J. Purvis | 1982-03-30 |