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Patents for William Brownell
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
51,257Nov. 28, 1865J.R. BrownScrew Cutting Machinescrew machines
76,579Apr. 14, 1868A.F. AllenImproved Signal Hose-Wrench for Coupling and Uncoupling Engine-Hosewrench jaw components
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