Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5566986 | Dual gasket lined pipe connector | William C. Allen, Daniel Hoyer, David E. Stikkers, Matthew J. Kelley | 1996-10-22 |
| 5405171 | Dual gasket lined pipe connector | William C. Allen, Daniel Hoyer, David E. Stikkers, Matthew L. Kelley | 1995-04-11 |
| 5163715 | Lined pipe connection device and method | Douglas P. Bouche, William C. Allen, Stephen Pye | 1992-11-17 |