Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9086088 | Screw having underside cutters and pockets | — | 2015-07-21 |
| 9046121 | Screw with dual edge on thread | — | 2015-06-02 |
| 8591159 | Screw having underside pockets | — | 2013-11-26 |
| 8348575 | Self-counter-sinking screw with circumferential cutters | — | 2013-01-08 |
| 6152666 | Screw for use as a fastener in fibrous material such as wood | Uli Walther, Thorsten Walther | 2000-11-28 |