Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6925954 | Systems and methods for allowing underwater escape from a submarine | Henry Van Acker, Jr. | 2005-08-09 |
| 5029906 | Method and apparatus for forming a ventable seal | K. Darrel Chelette | 1991-07-09 |
| 4928999 | Elastomeric guard seal for tubular connections | L. Steven Landriault, Donald J. Ortloff | 1990-05-29 |
| 4893844 | Tubular coupling with ventable seal | K. Darrel Chelette | 1990-01-16 |
| 4588213 | Threaded pipe connection | Kenneth Darrel Chelette | 1986-05-13 |
| 4373754 | Threaded connector | Leonard Landriault, Patrick E. McDonald | 1983-02-15 |