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Patents for Alonzo T. Welch
Patents 1 - 9 of 9
First set of recordsLast set of records
NumberDatePatenteeTitleType
306,933Oct. 21, 1884S. LawsonGas Enginegas and gasoline engines
307,057Oct. 21, 1884S. LawsonGas Enginegas and gasoline engines
399,907Mar. 19, 1889S. LawsonGas Enginegas and gasoline engines
399,908Mar. 19, 1889S. LawsonGas Enginegas and gasoline engines
402,749May 07, 1889S. LawsonGas Enginegas and gasoline engines
402,750May 07, 1889S. LawsonGas Enginegas and gasoline engines
402,751May 07, 1889S. LawsonGas Enginegas and gasoline engines
433,246Jul. 29, 1890S. LawsonValve for Gas Enginesinternal combustion engine valves
498,476May 30, 1893S. LawsonGas Engineignition systems
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