Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4968003 | Diaphragm valve | — | 1990-11-06 |
| 4917357 | Diaphragm valve | — | 1990-04-17 |
| 4915353 | Diaphragm valve | — | 1990-04-10 |
| 4911412 | Valves with improved actuators | — | 1990-03-27 |
| 4687017 | Inverted bellows valve | Carl R. Bork, Jr. | 1987-08-18 |
| 4634099 | High pressure inverted bellows valve | Carl R. Bork, Jr., William C. Steiss, Donald A. Levengood | 1987-01-06 |
| 4262880 | Plug valve | William C. Steiss, William H. Amor, William P. Tobbe, Thomas J. Gardner, Earl D. Shufflebarger | 1981-04-21 |
| 4201366 | Bellows valve | Bernard J. Gallagher, Earl D. Shufflebarger, David Simko, Edward E. Kish | 1980-05-06 |