Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5664379 | Stairway step assembly | Paul Probst, Karl J. F. Kroll | 1997-09-09 |
| 5646376 | Aircraft weighing scale with improved base, platform and load cell mounting assembly | Mark Browne, Tom Bartsch, Randie Evenson | 1997-07-08 |