Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4919050 | Well perforating device | John W. Dobrinski | 1990-04-24 |
| 4494415 | Liquid nitrogen pump | — | 1985-01-22 |
| 4478561 | Hydraulic intensifier | — | 1984-10-23 |
| 4436177 | Truck operator's cab with equipment control station | — | 1984-03-13 |
| 4417846 | Traveling block elevator latch assembly | — | 1983-11-29 |
| 4390315 | Fire fighting boom assembly for service vessel | — | 1983-06-28 |
| 4324194 | Stabilized hoist rig for deep ocean mining vessel | — | 1982-04-13 |
| 4290495 | Portable workover rig with extendable mast substructure, platform mounted drawworks and adjustable wellhead anchor | — | 1981-09-22 |
| 4285629 | Fire fighting boom assembly for service vessel | — | 1981-08-25 |
| 4257456 | Pressure compensated spool valve | — | 1981-03-24 |
| 4200054 | Stabilized hoist rig for deep ocean mining vessel | — | 1980-04-29 |