Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4435889 | Method and apparatus for the production of a rolling bearing cage | Hermann Hetterich, Herbert Dobhan, Norbert Klupfel | 1984-03-13 |
| 4433932 | Roller bearings installed without clearance and preloaded | Manfred Brandenstein, R/u/diger Hans, Hermann Hetterich, Gebhard Pape, Willi G/o/ ssmann | 1984-02-28 |
| 4429926 | Thin-walled bearing bushings manufactured by a deep drawing process | Armin Olschewski, Manfred Brandenstein, Heinrich Kunkel, Hermann Hetterich, Lothar Walter | 1984-02-07 |
| 4383670 | Method and apparatus for casting or injection-molding of cages of cylindrical rolling elements | Armin Olschewski, Manfred Brandenstein, Lothar Walter, Heinrich Kunkel, Herbert Dobhan +1 more | 1983-05-17 |
| 4377313 | Thin-walled bearing bushings produced in the drawing process | Armin Olschewski, Hermann Hetterich | 1983-03-22 |
| 4362687 | Method and apparatus for casting or injection-molding of cages of cylindrical rolling elements | Armin Olschewski, Manfred Brandenstein, Lothar Walter, Heinrich Kunkel, Herbert Dobhan +1 more | 1982-12-07 |
| 4357056 | Antifriction bearing for longitudinal movements of a shaft | Armin Olschewski, Manfred Brandenstein, Lothar Walter, Horst M. Ernst, Herbert Dobhan | 1982-11-02 |
| 4194752 | Skateboard | Gerhard Tilch, Wolfgang Friedrich, Herbert Dobhan, Hermann Hetterich, Sigismund Finzel | 1980-03-25 |