Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5271182 | Device for opening and closing the panel of a window, door, ventilation hatch, or similar closure | Dieter Renz, Horst Schwenk, Martin Langner | 1993-12-21 |
| 5226256 | Window system for a building | Wolfgang Fries, Dieter Renz | 1993-07-13 |
| 4803808 | Window including a casement frame pivoted to a stationary frame and a locking device for the casement frame mounted on the stationary frame | — | 1989-02-14 |
| 4691950 | Device for detachably securing pivotally connected members in a predetermined relative position | Siegfried Mayer | 1987-09-08 |