Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4906010 | Joint for connecting a spigot to the bell of a pipe or coupling | Len Pickering, Gord Burnett | 1990-03-06 |
| 4768278 | Method of manufacturing a joint for connecting a spigot to the bell of a pipe or coupling | Len Pickering, Gord Burnett | 1988-09-06 |