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Patents for P. Ackley
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
977,387Nov. 29, 1910A.A. HarvieTrowelstonemason
992,500May 16, 1911A.A. HarvieMortising and Centering Devicedrill accessories
1,008,261Nov. 07, 1911A.A. HarvieHardened Corners Processcarpenter squares
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