Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE30815 | Lift truck mast | — | 1981-12-08 |
| 4231450 | Overload warning system | Robert G. Hedtke, Harley A. Harrom, Sherman B. Frederick | 1980-11-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE30815 | Lift truck mast | — | 1981-12-08 |
| 4231450 | Overload warning system | Robert G. Hedtke, Harley A. Harrom, Sherman B. Frederick | 1980-11-04 |