Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5123447 | Quick disconnect coupling | John H. Calvin, Jose M. Alandy | 1992-06-23 |
| 4625746 | Automatic fluid sealing mechanism for a conduit with a frangible connector | John H. Calvin | 1986-12-02 |
| 4543993 | Positive locking connector | John H. Calvin | 1985-10-01 |