Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871090 | Cartridge assembly for flowable masses | — | 1989-10-03 |
| 4836729 | Anchoring unit for use in structures with internal open spaces | Heinz Bisping, Alfred Gahler, Franz Popp | 1989-06-06 |