Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5248241 | Components made of hardenable and non-hardenable materials | Ralph J. Ortolano, Kenneth A. Ball, John P. Pepe, Patrick O. Smith | 1993-09-28 |
| 4496013 | Prevention of cone seal failures in rock bits | — | 1985-01-29 |