Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4582349 | Plastically deformed seals in downhole tools | David V. Chenoweth, David M. McStravick | 1986-04-15 |
| 4460048 | Pump through equalizing check valve for use in intermittent gas lift well | Neil H. Akkerman | 1984-07-17 |
| 4373584 | Single trip tubing hanger assembly | Raphael J. Silberman, Frederick T. Tilton, Dennis A. Wichkoski | 1983-02-15 |
| 4285533 | Apparatus for carrying first and second weight loads of a tubing string | Raphael J. Silberman | 1981-08-25 |
| 4252196 | Control tool | Raphael J. Silberman, Frederick T. Tilton | 1981-02-24 |
| 4248307 | Latch assembly and method | Raphael J. Silberman, Frederick T. Tilton, Dennis A. Wichkoski | 1981-02-03 |
| 4239083 | Method and apparatus for rotating tubing conduits | Raphael J. Silberman, Frederick T. Tilton | 1980-12-16 |