Assignee
DRABERT FRITZ
4 granted patents·158 citations·filing 1974–1981
Technology mixA47C3
Top patents by PatentIndex Score
4 records- 0193USD270020SUpholstered chairDRABERT FRITZ·Filed 1980·Granted Aug 9, 1983·48 cites·1 claims
- 0287US3938858AChair with adjustable backrestDRABERT FRITZ·Filed 1974·Granted Feb 17, 1976·74 cites·12 claims
- 0354US4362335AAdjustable chair backrest mechanism using pneumatic and mechanical springsDRABERT FRITZ·Filed 1980·Granted Dec 7, 1982·25 cites·4 claims
- 0436US4406496ABackrest for chairsDRABERT FRITZ·Filed 1981·Granted Sep 27, 1983·11 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →