Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4976176 | Weld crown removal module | Jerald VanderPol | 1990-12-11 |
| D309563 | Tube cutter | — | 1990-07-31 |
| 4909114 | Panel saw apparatus | — | 1990-03-20 |
| 4872249 | Tool support and guide system for repair of boiler tube panels and process for carrying out repair using same | Jerald VanderPol, Cory J. Silber | 1989-10-10 |
| D278026 | Portable pipe end preparation tool | — | 1985-03-19 |
| D276882 | Portable pipe end preparation tool with right angle feed control | — | 1984-12-25 |
| D276881 | Portable pipe end preparation tool with right angle feed control | — | 1984-12-25 |
| D275759 | Combined reaming and counterbore tool bit | — | 1984-10-02 |
| D275761 | Portable combined reaming and seat counterboring tool holder | — | 1984-10-02 |
| 4466193 | Precision scriber for tubular workpieces | — | 1984-08-21 |
| 4459883 | Portable machine tool for preparing pipe joints for welding | — | 1984-07-17 |
| 4440531 | Reaming and counterboring cutting tool | — | 1984-04-03 |
| 4437366 | Tool carrier for portable lathe | — | 1984-03-20 |
| 4418591 | Pipe end preparation and cutoff tool | — | 1983-12-06 |
| 4365528 | Portable lathe | — | 1982-12-28 |
| 4364290 | Adjustable tool holder | — | 1982-12-21 |
| 4245529 | Elbow mandrel arrangement | — | 1981-01-20 |
| 4207786 | Cam follower tool arrangement | John E. Pertle | 1980-06-17 |