Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866642 | Method and apparatus for determining the diameter of rail vehicle wheels | Hans W. Obrig, Nis-Friedrich Ewald | 1989-09-12 |
| 4861204 | Turn broaching tool | Garri Berstein, Hans W. Obrig | 1989-08-29 |
| 4802285 | Method and apparatus for ascertaining the radial location of a new wheel profile to be produced by a reprofiling operation | Herbert Ligacz, Alfred Heimann, Hartwig Klosterhalfen | 1989-02-07 |
| 4799839 | Method and apparatus for performing a rotary broaching operation particularly on work pieces of rotational symmetry | Garri Berstein, Hans W. Obrig, Hermann Wolters | 1989-01-24 |
| 4798963 | Apparatus for monitoring and measuring the quality of rail wheel still mounted beneath a rail vehicle without directly contacting the rail wheels | Helmut Gruteser, Wilfred Coenen, Walter Elschenbroich | 1989-01-17 |