Individual holder
WITZEL H D
3 granted patents·85 citations·filing 1980–1988
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0185US4408618AAxial flow rotary separatorWITZEL H D·Filed 1980·Granted Oct 11, 1983·41 cites·60 claims
- 0267US4329833ASelf-propelled harvesting combineWITZEL H D·Filed 1981·Granted May 18, 1982·24 cites·18 claims
- 0359US4895210AClutch-brake steering for small agricultural machinesWITZEL H D·Filed 1988·Granted Jan 23, 1990·20 cites·17 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →