Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9562337 | Pile hammer | Jonathan Tremmier | 2017-02-07 |
| 5662175 | Sea water pile hammer | Vladimir A. Nifontov, Lev V. Erofeev, Dmitri A. Trifonov-Yakovlev | 1997-09-02 |
| 4819740 | Vibratory hammer/extractor | — | 1989-04-11 |