Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8756759 | Fastening plate for a door closer and door closing device having such a fastening plate | Karl-Heinz Kaestle | 2014-06-24 |
| 4763385 | Door closure transmission utilizing an eccentric pinion | Gerhard Furch, Georg Scheck, Ralf Storandt | 1988-08-16 |
| 4744125 | Door closer transmission including an eccentric pinion | Georg Scheck, Ralf Storandt | 1988-05-17 |
| 4653229 | Holding installation for double doors | Karl Mettenleiter, Ralf Storandt | 1987-03-31 |
| 4583324 | Apparatus for controlling the closing sequence of double leaved doors | Regina Storz, Ralf Storandt | 1986-04-22 |
| 4288054 | Door closer mounting arrangement | Gerhard Schroder | 1981-09-08 |