Assignee
LEFF RUTH B
6 granted patents·157 citations·filing 1978–1999
Top patents by PatentIndex Score
6 records- 0188US4165890ACommunication aidLEFF RUTH B·Filed 1978·Granted Aug 28, 1979·78 cites·2 claims
- 0270US4761633ACommunication aidLEFF RUTH B·Filed 1986·Granted Aug 2, 1988·35 cites·7 claims
- 0368USD363741SCabinet for instructional electronic communicationLEFF RUTH B·Filed 1993·Granted Oct 31, 1995·14 cites·1 claims
- 0457US4954083ACommunication aidLEFF RUTH B·Filed 1989·Granted Sep 4, 1990·19 cites·15 claims
- 0541USD420205SReligious head coveringLEFF RUTH B·Filed 1999·Granted Feb 8, 2000·4 cites·1 claims
- 0637US4915632ACommunication aid with sequential lightingLEFF RUTH B·Filed 1989·Granted Apr 10, 1990·7 cites·9 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →