Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4471888 | Device for dispensing measured amounts of multi-component materials | Armin Herb, Erich Leibhard | 1984-09-18 |
| 4269106 | Dowel for a hollow wall structure | Erich Leibhard, Hanno Richter | 1981-05-26 |