Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4760935 | Plastic closure plug | Paul Christiaan H. van den Beld, Gerhard Kettenring, Bodo Greulich | 1988-08-02 |
| 4588105 | Sealing plug | Bodo Greulich, Gerhard Kettenring | 1986-05-13 |
| 4550466 | Cleaning elements for inside cleaning of the tubes of tube-type heat exchangers and method of manufacturing same | — | 1985-11-05 |
| 4406031 | Cleaning member for cleaning the interior of heat exchanger tubes | Klaus Eimer, Felix Kraker, Hans-Werner Schildmann, Hans Sonnenschein | 1983-09-27 |
| 4383346 | Cleaning member for cleaning the interior of heat exchanger tubes | Rolf Bochinski, Klaus Eimer, Hans-Werner Schildmann | 1983-05-17 |
| 4294064 | Method of and a device for balancing a changing load of a strip roll orbiting about an axis in a strip winding machine | Hans Kierdorf | 1981-10-13 |