Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6851906 | Nail-shaped fastening element | Hans Hachtel, Jens-Jörg Esser, Ralf Laternser | 2005-02-08 |
| 6824342 | Fastening element with a prestress member having an elastic bearing surface | Michael Mergenbaum, Werner Wanger | 2004-11-30 |
| 5261770 | Nail fastener assembly | Elmer C. Hoepker, Hans Hachtel | 1993-11-16 |
| 5069584 | Hollow drilling tool | Josef Obermeier, Eugen Magyari, Walter Ritt, Ernst Wohlwend, Peter Cavada | 1991-12-03 |