Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5804093 | Joint infill mold | Richard L. Wyke, David C. Dressel | 1998-09-08 |
| 5489405 | Composite joint infill system | Dennis E. Holbert, David C. Dressel, Richard L. Wyke | 1996-02-06 |
| 5458438 | Insulating pipe spacers | Richard L. Wyke | 1995-10-17 |
| 5328648 | Method of using a composite joint infill system | Richard L. Wyke, David C. Dressel | 1994-07-12 |
| 5294396 | Method of makikng anode protector | David C. Dressel, Richard L. Wyke | 1994-03-15 |
| 5164058 | Anode protector | David C. Dressel, Richard L. Wyke | 1992-11-17 |