Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689938 | Method of fabricating and installing gas service line completion kit | Jeffrey W. Lyall, Mark Huetinck | 1997-11-25 |
| 5501331 | Gas service line completion kit and method of fabrication and installation | Jeffrey W. Lyall, Mark Huetinck | 1996-03-26 |
| 4635972 | Plastic pipe coupling apparatus and method of using same | — | 1987-01-13 |
| 4386796 | Pipe repair coupling | Donald C. Hill | 1983-06-07 |
| 4257452 | Biased open direct response valve with damping means | Donald C. Hill | 1981-03-24 |
| 4243254 | Slip fit type tubing coupling | Donald C. Hill | 1981-01-06 |