Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4687017 | Inverted bellows valve | Oliver L. Danko | 1987-08-18 |
| 4684106 | Valve | Terrence J. Kolenc, William C. Steiss, Earl D. Shufflebarger, William P. Tobbe | 1987-08-04 |
| 4634099 | High pressure inverted bellows valve | Oliver L. Danko, William C. Steiss, Donald A. Levengood | 1987-01-06 |
| 4606374 | Valve | Terrence J. Kolenc, William C. Steiss, Earl D. Shufflebarger, William P. Tobbe | 1986-08-19 |
| 4530373 | Pressure relief valve | William C. Steiss, William P. Tobbe, Earl D. Shufflebarger, Stephen Matousek, Thomas J. Gardner | 1985-07-23 |