Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6145539 | Balanced coupling with pressure bleed | Douglas F. Hopson | 2000-11-14 |
| 6116277 | Farm coupling | Douglas F. Hopson | 2000-09-12 |
| 6095190 | Coupling with female half having internal pressure relief | Douglas F. Hopson | 2000-08-01 |
| 5806564 | No spill coupling | — | 1998-09-15 |
| 5730185 | Pressure locking dispenser half | Steven Wilkins, Douglas F. Hopson | 1998-03-24 |
| 5496389 | Clean air fan filter module | — | 1996-03-05 |
| 5337782 | Hydraulic coupling | — | 1994-08-16 |
| 5072755 | Quick disconnect coupling | — | 1991-12-17 |
| 5063965 | Quick disconnect coupling | — | 1991-11-12 |
| 4924909 | Semi-balanced staggered locking coupling | — | 1990-05-15 |
| 4745948 | Coupling device | Michael J. Varasso | 1988-05-24 |
| 4582347 | Combination detent and threaded quick disconnect | Michael J. Varasso | 1986-04-15 |