Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5332153 | Sleeve for increasing retention value of a screw | Erich Leibhard, Wolfgang Ludwig, Thomas Schwaninger | 1994-07-26 |
| 5288162 | Expansion dowel | Heinz Bisping, Horst Goetzfried, Wolfgang Hausner, Helmut Mirsberger | 1994-02-22 |