Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869395 | Vending machine with interchangeable magazines | — | 1989-09-26 |
| 4810957 | Device for sensing the number of items stored in a compartment | Leif A. Unruh, Bjorn L. G. Bjernstad, Nils E. H. Olsson, Mariusz Gerlach | 1989-03-07 |