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Patents for Simeon Duck
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
CA-4,879Jun. 18, 1875S. DuckMortising machinemortising machines
171,360Dec. 21, 1875S. DuckImprovement in mortising-machinesmortising machines
197,111Nov. 13, 1877S. DuckImprovement in mortising-machinesmortising machines
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