Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818163 | Anchor bolt assembly including a bolt and an expanding sleeve | Rolf Bereiter | 1989-04-04 |
| 4809898 | Explosive charge operated tool for fastening elements | Theo Gassner | 1989-03-07 |