Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878640 | Toothed anchoring rail | Klaus Erohlich | 1989-11-07 |
| 4869042 | Retaining device | — | 1989-09-26 |
| 4838507 | Panel anchoring device | — | 1989-06-13 |
| 4838742 | Method and apparatus for making an undercut drilled hole in a fixed base | — | 1989-06-13 |
| 4821994 | Molding for the retention of a tie in the concreting of a precast concrete part | — | 1989-04-18 |