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All Patents in class 476/51
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
142,504Sep. 02, 1873L.H. OlmstedImprovement in the modes of regulating speed in machinerysewing machines
159,589Feb. 09, 1875C. LindnerImprovement in saw-millscircular sawmills
585,384Jun. 29, 1897J.W. HawkinsDrill-pressdrill presses
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