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Patents for D. H. Murphy
Patents 1 - 3 of 3
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
155,148Sep. 22, 1874B. ForstnerForstner Bit
298,029May 06, 1884N. SawyerTap Wrench
300,901Jun. 24, 1884N. SawyerDie Stock and Die
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