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Patents for Arthur J. Firth
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
644,798Mar. 06, 1900A.J. FirthInternal Combustion Enginediesel engines
683,459Oct. 01, 1901A.J. FirthValve Gear for Diesel Motorvalve gear
2,885,901May 12, 1959A.J. FirthMachine Tool Feed Mechanismmetalworking machine mechanisms
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