Assignee
NORFIELD MANUFACTURING CO
4 granted patents·56 citations·filing 1974–1983
Top patents by PatentIndex Score
4 records- 0158US3979817ADoor hinge applying methodNORFIELD MANUFACTURING CO·Filed 1974·Granted Sep 14, 1976·14 cites·3 claims
- 0256US4485857ADoor processing machineNORFIELD MANUFACTURING CO·Filed 1983·Granted Dec 4, 1984·16 cites·20 claims
- 0354US4254895AApparatus for automatic alignment and attachment of a doorjamb and stopNORFIELD MANUFACTURING CO·Filed 1979·Granted Mar 10, 1981·14 cites·14 claims
- 0452US4100661ADoor hinge applying apparatusNORFIELD MANUFACTURING CO·Filed 1976·Granted Jul 18, 1978·12 cites·8 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →