Assignee
DUPPS CO
US·4 granted patents·22 citations·filing 1987–1991
Top patents by PatentIndex Score
4 records- 0156US4996919ABi-metal feed screw for screw pressesDUPPS CO·Filed 1989·Granted Mar 5, 1991·11 cites·4 claims
- 0235US5088397ACast formed bi-metallic worm assemblyDUPPS CO·Filed 1991·Granted Feb 18, 1992·6 cites·4 claims
- 0330US5188023ACast formed bi-metallic worm assembly and methodDUPPS CO·Filed 1991·Granted Feb 23, 1993·4 cites·10 claims
- 0429US4791864ADrainage system for expressing fibrous materialsDUPPS CO·Filed 1987·Granted Dec 20, 1988·1 cites·13 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →