Individual holder
CASTLE ALFRED B
4 granted patents·34 citations·filing 1977–1982
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0142US4227731ATool for lifting and maneuvering utility access coversCASTLE ALFRED B·Filed 1979·Granted Oct 14, 1980·9 cites·8 claims
- 0234US4490088ALifting toolCASTLE ALFRED B·Filed 1982·Granted Dec 25, 1984·11 cites·8 claims
- 0332US4321003ALifting toolCASTLE ALFRED B·Filed 1980·Granted Mar 23, 1982·10 cites·10 claims
- 0431US4154071AAuxiliary locking mechanismCASTLE ALFRED B·Filed 1977·Granted May 15, 1979·4 cites·4 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →