Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4730777 | Method and apparatus for winding ring cores, ring coils, ring core parts or ring coil parts | Otto Graul | 1988-03-15 | |
| 4431063 | Drive mechanism for drill | Horace M. Varner, LaValle V. Brummert, John W. Bodle | 1984-02-14 | |
| 4271914 | Automatic feed and rotational speed control system of a hydraulic motor operated drill | — | 1981-06-09 | |
| 4254638 | Positive release means for articulated flexible shaft | — | 1981-03-10 | $1,699,000 |