Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8079647 | Vibratory milling machine having linear reciprocating motion | Robert E. Able, Thomas J. Oothoudt | 2011-12-20 |
| 8056985 | Vibratory machine | Robert E. Able, Louis E. Silay | 2011-11-15 |
| 7954566 | Stabilizer for drill strings | — | 2011-06-07 |
| 7900719 | Bi-steel percussive drill rod | — | 2011-03-08 |