Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4350591 | Drilling mud cleaning apparatus | — | 1982-09-21 |
| 4328461 | Apparatus for and method of measuring a high voltage electric field | William G. Butters | 1982-05-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4350591 | Drilling mud cleaning apparatus | — | 1982-09-21 |
| 4328461 | Apparatus for and method of measuring a high voltage electric field | William G. Butters | 1982-05-04 |