Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7444652 | Protective device | Joseph F. Fritsch | 2008-10-28 |
| 6801394 | Cleaning device for treating the video head and/or rotating drum of a video recorder and/or playback unit | Joseph F. Fritsch | 2004-10-05 |
| 6099388 | Method and apparatus for repairing a damaged compact disc | Joseph F. Fritsch | 2000-08-08 |
| 6028830 | Cleaning device and cleaning method | Joseph F. Fritsch | 2000-02-22 |
| 6028751 | Cleaning device for cleaning components of a video unit and for cleaning outside a tape path area | Joseph F. Fritsch | 2000-02-22 |
| 5864348 | Cleaning device and a method for cleaning an ink jet printing head | Joseph F. Fritsch | 1999-01-26 |
| 5856900 | Camcorder actuated treatment device for treating a camcorder head | Joseph F. Fritsch | 1999-01-05 |
| 5309307 | Timer controlled device for cleaning a moving head and/or a drum of a playback and/or recording unit | Joseph F. Fritsch | 1994-05-03 |
| 4851945 | Demagnetizing device having an oscillating permanent magnet | Joseph F. Fritsch, Francois Malgat | 1989-07-25 |