Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5377751 | Apparatus and method for centralizing downhole pipe and blast joints | Robert J. Uherek, Sr., Brian Uherek | 1995-01-03 |
| 4486003 | Gate valve structure | Danny S. Meyer | 1984-12-04 |
| 4291862 | Expanding gate valve | Patricio D. Alvarez, James M. Fowler, Jr. | 1981-09-29 |
| 4290581 | Seat assembly for ball valves | John B. Williams, Jr. | 1981-09-22 |