Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666633 | Method of producing interlocking metal parts | Norbert Arnold, Guenter Seibold, Manfred Haage, Bernd Plocher | 1997-09-09 |
| 5655864 | Expansible fixing plug | Manfred Haage, Gunter Seibold, Bernd Plocher, Wilfried Weber | 1997-08-12 |
| 5647709 | Anchor bolt anchorable by explosive charge | Wilfried Weber, Rolf Prummer, Hans Peter Mehlin | 1997-07-15 |
| 5637158 | Method for the manufacture of an expansible anchor consisting of corrosion-resistant steel | Norbert Arnold, Paul Gumpel | 1997-06-10 |
| 5634752 | Anchor bolt for anchoring by compound mass, and method of manufacturing the same | Manfred Haage, Guenter Seibold, Bernd Plocher, Wilfried Weber | 1997-06-03 |