Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5662175 | Sea water pile hammer | Don C. Warrington, Lev V. Erofeev, Dmitri A. Trifonov-Yakovlev | 1997-09-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5662175 | Sea water pile hammer | Don C. Warrington, Lev V. Erofeev, Dmitri A. Trifonov-Yakovlev | 1997-09-02 |