Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8365775 | Concentric, insulated tubular conduits and method for assembly | Layton R. Bull, Douglas J. Trosclair, Terron A. Adams | 2013-02-05 |
| 6520732 | Concentric, insulated tubular conduits and method of assembly | Layton R. Bull, Douglas J. Trosclair, Terron A. Adams | 2003-02-18 |
| 6325278 | Concentric, insulated tubular conduits and method of assembly | Layton R. Bull, Douglas J. Trosclair, Terron A. Adams | 2001-12-04 |
| 4655485 | Seals for use in oil and gas well production tubing | Norman M. Albrecht | 1987-04-07 |