Individual holder
ALLEN CLIFFORD H
5 granted patents·114 citations·filing 1974–1978
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
5 records- 0185US4140444AFlexible shaft assembly for progressing cavity pumpALLEN CLIFFORD H·Filed 1977·Granted Feb 20, 1979·35 cites·7 claims
- 0280US4033144AFlexible couplingALLEN CLIFFORD H·Filed 1976·Granted Jul 5, 1977·37 cites·10 claims
- 0375US3938744APositive displacement rotary pump and drive coupling thereforALLEN CLIFFORD H·Filed 1974·Granted Feb 17, 1976·22 cites·10 claims
- 0455US4153397ARotor drive coupling for progressing cavity pumpALLEN CLIFFORD H·Filed 1977·Granted May 8, 1979·12 cites·8 claims
- 0544US4185839APacking gland for pump shaft sealALLEN CLIFFORD H·Filed 1978·Granted Jan 29, 1980·8 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when ALLEN CLIFFORD H files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →