Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5232064 | Weighing scale assembly | William P. Kroll, Kai Kroll | 1993-08-03 |
| 5228527 | Force measurement assembly | William P. Kroll, Kai Kroll | 1993-07-20 |
| 4775018 | Load cell assembly | William P. Kroll, Mark W. Kroll, Karl J. F. Kroll | 1988-10-04 |
| 4714121 | Wheel scale assembly | William P. Kroll, Mark W. Kroll, Karl J. F. Kroll | 1987-12-22 |
| 4508954 | Portable arc voltage wirefeed welding system | — | 1985-04-02 |