Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4330282 | Rotor driven vibratory device having rotor centralization means and vibrational mode selection means associated therewith | — | 1982-05-18 |
| 4315742 | Vibratory device having tool assembly with fluid transport means | Arthur A. Knopp | 1982-02-16 |