Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690455 | Metal expansible anchor | Dirk ELGER | 1997-11-25 |
| 5664920 | Fixing element with expander member | Gerhard Porlein, Eberhard Maeder | 1997-09-09 |
| 5609453 | Expansible plug for anchoring in a drilled hole having an undercut | — | 1997-03-11 |
| 5605422 | Nail with expansion region | — | 1997-02-25 |
| 5603593 | Expansible fixing plug of plastic material | Wolfgang Nehl | 1997-02-18 |