Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5028078 | Tube fitting with variable tube insertion | Anthony M. Pietramale, Richard W. Moerhing | 1991-07-02 |
| 4927116 | Plug valve | Anthony M. Pietramale | 1990-05-22 |
| 4685706 | Releasable push-to-connect tube fitting | Leonard J. Kowal, Norman Wells | 1987-08-11 |
| 4621842 | Releasable push-to-connect tube fitting | Leonard J. Kowal, Norman Wells | 1986-11-11 |
| 4595218 | Insulative coupling | John Frederic Carr, Leonard J. Kowal | 1986-06-17 |
| 4556242 | Vibration resistant high pressure tube fitting | Leonard J. Kowal | 1985-12-03 |
| 4538842 | High pressure, leakproof, blowout-proof tube fitting | Leonard J. Kowal | 1985-09-03 |
| 4389873 | Tube bender construction | Leonard J. Kowal | 1983-06-28 |
| 4379400 | Tube bender construction | — | 1983-04-12 |
| 4304422 | Tube coupling with frangible sleeve | — | 1981-12-08 |