Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885724 | Cableless seismic digital field recorder having on-site seismic data processing capabilities | Randol R. Read, Ralph E. Warmack, James M. Farmer, Connie T. Marshall | 1989-12-05 |