Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7270087 | Heat trap | Joseph C. Passerell, Michael C. Passerell, Steven Passerell, Jason D. Passerell | 2007-09-18 |
| 5149054 | Reinforced polymer valve | Stan Skrbis | 1992-09-22 |
| 4750707 | Angle valve | Ronald L. Johncox, R. Dale Moretz, Richard Melville France | 1988-06-14 |
| 4712813 | Coupling apparatus | Danny G. Rogge | 1987-12-15 |
| 4628965 | Stab-type coupling | — | 1986-12-16 |
| 4487432 | No-hole insertion joint | Frank R. Volgstadt | 1984-12-11 |
| 4418888 | Angle cock valve | Irvin D. Jacobson, Frank R. Volgstadt | 1983-12-06 |
| 4282175 | Stab-type coupling and method | Frank R. Volgstadt | 1981-08-04 |
| 4229025 | Stab-type coupling | Frank R. Volgstadt | 1980-10-21 |
| 4216793 | Shutoff valve | Frank R. Volgstadt, Albert H. Reschke, Raymond A. Day | 1980-08-12 |