Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6851906 | Nail-shaped fastening element | Horst-Detlef Gassmann, Jens-Jörg Esser, Ralf Laternser | 2005-02-08 |
| 5261770 | Nail fastener assembly | Elmer C. Hoepker, Horst-Detlef Gassmann | 1993-11-16 |
| 4986709 | Fastening element assembly | Michael Maier, Gerhard Ehmig | 1991-01-22 |
| 4907928 | Fastening member for securement into hard materials | Josef Beck, Alfred Tobler | 1990-03-13 |
| 4840527 | Expansion dowel assembly | Hans Gschwend, Werner Wanger | 1989-06-20 |