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Patents for H. J. Sprague
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
139,177May 20, 1873G.P. MoloneyImprovment in Pipe Tongspipe tongs
140,561Jul. 01, 1873G. WarsopPipe Wrenchespipe wrenches
143,908Oct. 21, 1873D.D. IngramImproved Pipe-Wrenchpipe wrenches
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