Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5597417 | Method and apparatus for the percussive cleaning of objects | Ulrich Rottlander | 1997-01-28 |
| 4755232 | Method and apparatus for mechanically controlling the flame cutting and/or connection welding of workpieces | Paul Roll | 1988-07-05 |
| 4730473 | Method and apparatus for rolling tubes | Ulrich Rottlander | 1988-03-15 |
| 4694897 | Heat exchanger for heat exchange between hot gas and medium flowing through tube bundles | — | 1987-09-22 |
| 4457361 | Connection element for the transfer of knock- or impact-energy upon heating or cooling surfaces to be cleaned and located in a pressure vessel | Ulrich Premel | 1984-07-03 |