Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4455958 | Drillship canopy | J. Cam O'Rourke, Robert E. Marshall, Frank G. Bercha | 1984-06-26 |
| 4328760 | Skirt construction | J. Cam O'Rourke, Frank G. Bercha | 1982-05-11 |
| 4323322 | Warm air canopy system for providing ice-free zone | J. Cam O'Rourke, Frank G. Bercha | 1982-04-06 |
| 4270476 | Barge construction for warm air canopy ice-free zone | J. Cam O'Rourke, Frank G. Bercha | 1981-06-02 |