Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4913572 | Reloadable ribbon cassette for typewriters or office machines of similar construction | Rolf Behrens, Hermann Jendricke, Manfred Sauer, Klaus-Dieter Frerichs, Andreas Wesselhoft +2 more | 1990-04-03 |
| 4861177 | Reloadable ribbon cassette system | Hans-Peter Heins, Hermann Jendricke | 1989-08-29 |
| 4820125 | Ribbon device for typewriters or similar office machines | Manfred Sauer | 1989-04-11 |
| 4780010 | Ribbon spools for a reloadable cassette for a typewriter or similar office machine | Rolf Behrens, Hermann Jendricke, Manfred Sauer, Klaus-Dieter Frerichs, Andreas Wesselhoft +2 more | 1988-10-25 |
| 4440514 | Adjustable ribbon feed rates dependent upon ribbon type for ink ribbon cassettes | Wolfgang Mudder, Bernd Tappehorn | 1984-04-03 |
| 4431324 | Sound damping ribbon cartridge for a typewriter or similar office machine | Bernd Tappehorn | 1984-02-14 |