Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9920541 | Scaffolding pipe of a structural scaffolding system and scaffolding element | Frank Erath, Rudolf Specht | 2018-03-20 |
| 5996399 | Method of using a test liquid for checking the efficiency of electrical power station components | Frantisek Klecka, Rainer Wulff, Luder Warnken | 1999-12-07 |