Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9132431 | Equipment for use in the extraction of placer gold from gravel and sand deposits | Larry Allen Alderson | 2015-09-15 |
| 8616379 | Removable support legs for use with gold prospecting sluice | Larry Allen Alderson | 2013-12-31 |