Assignee
WALWORTH CO
3 granted patents·68 citations·filing 1977–1981
Top patents by PatentIndex Score
3 records- 0176US4130285AValve sealing deviceWALWORTH CO·Filed 1978·Granted Dec 19, 1978·34 cites·17 claims
- 0254US4394003ACryogenic butterfly valve with bi-directional sealing capabilityWALWORTH CO·Filed 1981·Granted Jul 19, 1983·19 cites·8 claims
- 0349US4159818ARotary valve top seal assemblyWALWORTH CO·Filed 1977·Granted Jul 3, 1979·15 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →