Individual holder
DUKE ROBERT L
7 granted patents·142 citations·filing 1987–1996
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
7 records- 0186USD400769SMulti-purpose strainer wrenchDUKE ROBERT L·Filed 1996·Granted Nov 10, 1998·32 cites·1 claims
- 0286USD311315STub strainer wrench with multi-positionable handleDUKE ROBERT L·Filed 1987·Granted Oct 16, 1990·26 cites·1 claims
- 0372US4844121ARV sewage line assemblyDUKE ROBERT L·Filed 1988·Granted Jul 4, 1989·43 cites·8 claims
- 0463US5324001ASewer transfer systemDUKE ROBERT L·Filed 1993·Granted Jun 28, 1994·29 cites·17 claims
- 0544USD306896SSpray head for dishwashing equipmentDUKE ROBERT L·Filed 1987·Granted Mar 27, 1990·4 cites·1 claims
- 0638US5083758APlumbing toolDUKE ROBERT L·Filed 1990·Granted Jan 28, 1992·8 cites·16 claims
- 0730USD317643SCombined sprayer and handle for dishwashing equipmentDUKE ROBERT L·Filed 1989·Granted Jun 18, 1991·0 cites·1 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →