Individual holder
FRITSCH JOSEPH F
IE·3 granted patents·33 citations·filing 1987–1993
Individually held — no corporate assignee on record.
Technology mixG11B3
Top patents by PatentIndex Score
3 records- 0162US4868700ACleaning device for disc drive unitFRITSCH JOSEPH F·Filed 1987·Granted Sep 19, 1989·13 cites·13 claims
- 0261US5309307ATimer controlled device for cleaning a moving head and/or a drum of a playback and/or recording unitFRITSCH JOSEPH F·Filed 1993·Granted May 3, 1994·14 cites·29 claims
- 0340US4851945ADemagnetizing device having an oscillating permanent magnetFRITSCH JOSEPH F·Filed 1987·Granted Jul 25, 1989·6 cites·18 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →