Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5179901 | Subterranean storage vault | — | 1993-01-19 |
| 4499957 | Method for removing earth cuttings from holes being formed by a pneumatically exhausted drill tool | — | 1985-02-19 |
| 4415047 | Downhole case driving apparatus for impact drills | — | 1983-11-15 |
| 4387776 | Well case driving anvil | — | 1983-06-14 |
| 4212359 | Downhole weight control device for impact rock drilling tool | — | 1980-07-15 |