Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4947018 | Retracting rocker unit | William H. Cooley, Peter E. Harding | 1990-08-07 |
| 4809735 | Valve and tapping tee apparatus and method | Frank R. Volgstadt, Albert H. Reschke | 1989-03-07 |
| 4730636 | Valve and tapping tee apparatus and method | Frank R. Volgstadt, Albert H. Reschke | 1988-03-15 |