Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5826336 | Process for the production of series-produced valves used in heating, ventilating and air-conditioning systems | — | 1998-10-27 |
| 5236017 | Distributing valve of modular construction | Ernst-August Meyer, Werner Dannenberg, Johannes Thomas, Achim Krafft | 1993-08-17 |
| 5054517 | One-way restrictor | Thomas Liesenhoff, Hans-Friedrich Meyer, Ernst-August Meyer, Rudolf Moller | 1991-10-08 |
| 5021130 | Aqueous acidic solutions for the electrodeposition of tin and lead/tin alloys | Willi Metzger, Karl-Jurgen Schmidt | 1991-06-04 |