Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4748075 | Flat sealing material made of a soft substance, particularly for the production of gaskets that are to be subjected to high stresses | Horst Beyer, Hans-Rainer Zerfass, Hans Haack, Franz Kutnar | 1988-05-31 |
| 4677014 | Impregnated gasket and method of making the same | — | 1987-06-30 |
| 4656085 | Impregnated soft, flat gasket and manufacturing method | Franz-Josef Giesen, Klaus Lonne, Klaus-Peter Majewski | 1987-04-07 |