Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4907648 | Plastic crosscurrent heat exchanger | Friedel Emmerich, Dieter Franitza, Heinrich Hartmann | 1990-03-13 |
| 4569166 | Construction including a supported element of extruded synthetic resin | Hans-Peter Buchmuller, Klaus Kolbe | 1986-02-11 |
| 4422268 | Barrel-vault roofing element | Dieter Mueller, Inge Loebig | 1983-12-27 |
| 4371575 | Rigid, one-piece, biaxially stretched shaped body of synthetic resin and method for making the same | Dieter Mueller, Bernd Oleiko | 1983-02-01 |