Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8365775 | Concentric, insulated tubular conduits and method for assembly | Layton R. Bull, Douglas J. Trosclair, Roy J. Blanchard | 2013-02-05 |
| 6520732 | Concentric, insulated tubular conduits and method of assembly | Layton R. Bull, Douglas J. Trosclair, Roy J. Blanchard | 2003-02-18 |
| 6325278 | Concentric, insulated tubular conduits and method of assembly | Layton R. Bull, Douglas J. Trosclair, Roy J. Blanchard | 2001-12-04 |