Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10000938 | Concrete void forming method and device | Dennard Charles Gilpin, Bruce Duane Stiles | 2018-06-19 |
| 9771728 | Device for forming a void in a concrete foundation | Dennard Charles Gilpin, Bruce Duane Stiles | 2017-09-26 |
| 7191510 | Electroluminescent (EL) lamp with current limiting fuse | Stephen J. Sanderson | 2007-03-20 |