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Patents for New England Manufacturing Works & Co.
Patents 1 - 4 of 4
First set of recordsLast set of records
57,466Aug. 28, 1866G.W. BishopImprovement in ratchet-drillsratchet braces
58,765Oct. 16, 1866G.W. BishopImprovement in friction-clutch pulleysindustrial machine pulleys and belt drive mechanisms
69,533Oct. 08, 1867G.W. BishopImprovement in drilling machinesdrill presses
89,461Apr. 27, 1869G.W. BishopImprovement in Pawl-Wrenches and Bracesratchet wrenches
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