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Patents for Willard A. Roraback
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
519,924May 15, 1894W.P. NortonScrew Cutting Engine Lathescrewcutting lathes
528,381Oct. 30, 1894W.P. NortonDrilling Machinehorizontal boring mills
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