Individual holder
HOWETH DAVID F
US·3 granted patents·73 citations·filing 1982–1987
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0174US4694649APressure limiting acceleration control system and valve for hydraulic motorsHOWETH DAVID F·Filed 1986·Granted Sep 22, 1987·36 cites·15 claims
- 0271US4465497APneumatic cyclic event timing actuator and control circuit for use with air blast filter cleaning and bulk material bin blasting systemsHOWETH DAVID F·Filed 1982·Granted Aug 14, 1984·29 cites·16 claims
- 0334US4817661AAdjustable energy output/cyclic event filter cleaning control systemHOWETH DAVID F·Filed 1987·Granted Apr 4, 1989·8 cites·22 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →