Inventor · disambiguated record
Donald Firth
Also filed as: FIRTH DONALD
9 granted patents·344 citations·filing 1969–1991
90Inventor score
Top patents by PatentIndex Score
9 records- 0193US4516674AMethod and apparatus for conveying and metering solid materialFIRTH DONALD·Filed 1984·Granted May 14, 1985·85 cites·5 claims
- 0291US5051041AMultiple-choke apparatus for transporting and metering particulate materialSTAMET INC·Filed 1991·Granted Sep 24, 1991·82 cites·14 claims
- 0391US4988239AMultiple-choke apparatus for transporting and metering particulate materialSTAMET INC·Filed 1990·Granted Jan 29, 1991·85 cites·15 claims
- 0489US4200052ASystems for controlling the position of a moored floating vesselSECRETARY INDUSTRY BRIT·Filed 1977·Granted Apr 29, 1980·39 cites·13 claims
- 0572US4361333ARetort seal mechanism with integral bearingsTOSCO CORP·Filed 1981·Granted Nov 30, 1982·14 cites·15 claims
- 0672US4180171ACranesSECRETARY INDUSTRY BRIT·Filed 1977·Granted Dec 25, 1979·22 cites·5 claims
- 0751US4048906ALow-stress cam-driven piston machinesNAT RES DEV·Filed 1969·Granted Sep 20, 1977·6 cites·7 claims
- 0839US4353558AHydrostatic retort sealTOSCO CORP·Filed 1980·Granted Oct 12, 1982·4 cites·8 claims
- 0931US3971217AReciprocatable devicesSECRETARY TRADE IND BRIT·Filed 1974·Granted Jul 27, 1976·7 cites·8 claims
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