Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11796298 | Jig for firearm lower receiver manufacture | Charles E. Chang, Wayne R. Partington, Tilden Alan Smith | 2023-10-24 |
| 9810517 | Method for machining a firearm lower receiver using a jig | Charles E. Chang, Wayne R. Partington, Tilden Alan Smith | 2017-11-07 |
| 9009986 | Jig for firearm lower receiver manufacture | Charles E. Chang, Wayne R. Partington, Tilden Alan Smith | 2015-04-21 |