Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4601354 | Means and method for facilitating measurements while coring | Frank L. Campbell, William C. Corea | 1986-07-22 |
| 4499955 | Battery powered means and method for facilitating measurements while coring | Frank L. Campbell, William C. Corea | 1985-02-19 |
| 4499956 | Locking means for facilitating measurements while coring | Frank L. Campbell, William C. Corea | 1985-02-19 |
| 4492275 | Means and method for facilitating measurements while coring | Frank L. Campbell, William C. Corea | 1985-01-08 |