Issued Patents All Time
Showing 51–56 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4314435 | Foliage trimmer | — | 1982-02-09 |
| 4245669 | Self-actuated flow regulator system | — | 1981-01-20 |
| 4240808 | Processing aqueous effluent liquors from degasification or gasification of coal | Alfred Garber, Paul Wiesner, Hans-Martin Stonner, Fritz Wohler | 1980-12-23 |
| 4237629 | Apparatus for actuating the operation of a snowplow | — | 1980-12-09 |
| 4238469 | Process for the manufacture of aluminum fluoride | Wilhelm Tschebull | 1980-12-09 |
| 4231960 | Process for the purification of urea solutions containing biuret and the like | — | 1980-11-04 |