Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D741271 | Push button | — | 2015-10-20 |
| 4521139 | Method of regulating mass streams | Horst Kretschmer, Guenter Tietze, Hans-Joachim Schweigel, Manfred Schingnitz, Klaus Werner +1 more | 1985-06-04 |