Issued Patents All Time
Showing 76–89 of 89 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4706526 | Fluid operated wrench | — | 1987-11-17 |
| 4706527 | Fluid operated wrench for tightening or loosening a threaded connector | — | 1987-11-17 |
| 4671142 | Fluid operated wrench | — | 1987-06-09 |
| 4663997 | Fluid-operated wrench | — | 1987-05-12 |
| 4644829 | Fluid-operated wrench | — | 1987-02-24 |
| 4446762 | Universally usable hydraulic wrench for simultaneously tightening or loosening two threaded connectors or for tightening or loosening a single threaded connector with a greater force | — | 1984-05-08 |
| 4423649 | Ratchet drive with an equal load double pawl arrangement | Wilhelm Krautter | 1984-01-03 |
| 4409865 | Continuous ratchet drive | Wilhelm Krautter | 1983-10-18 |
| 4406185 | Universally usable hydraulic wrench for simultaneously tightening or loosening two threaded connectors | — | 1983-09-27 |
| 4387611 | Hydraulic wrench for simultaneously tightening or loosening at least two threaded connectors | — | 1983-06-14 |
| 4368655 | Continuous ratchet drive | — | 1983-01-18 |
| 4336727 | Hydraulic wrench for limited space application | — | 1982-06-29 |
| 4233865 | Hydraulic wrench | — | 1980-11-18 |
| 4201099 | Hydraulic wrench | — | 1980-05-06 |