Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5351754 | Apparatus and method to cause fatigue failure of subterranean formations | Nathanial A. Hardin | 1994-10-04 |
| 4945986 | Constant head pump for sonic wave generator used in treating subsurface formations | Nathaniel Hardin | 1990-08-07 |