Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6604652 | Cigarette vending machine | — | 2003-08-12 |
| 5788045 | Empty bottle collector | Richard Frank Stiefel | 1998-08-04 |
| 4674677 | Collecting and accounting apparatus for empty bottles | — | 1987-06-23 |
| 4369324 | Process for the preparation of 2-amino-6-nitrobenzothiazole | Walter Horstmann, Richard Sommer, Gerhard Wolfrum | 1983-01-18 |