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All Patents in class 100/231
Patents 1 - 7 of 7
First set of recordsLast set of records
110,455Dec. 27, 1870A. HamlinImproved power-pressstamping presses
219,555Sep. 09, 1879O.C. WoolsonImprovement in hydraulic-power machineshydraulic apparatus
714,866Dec. 02, 1902F.H. ColvinArbor Pressarbor presses
960,785Jun. 07, 1910A. BeaudryPower-hammerdrop hammers
1,038,543Sep. 17, 1912G.T. EamesArbor press or ramarbor presses
1,106,500Aug. 11, 1914G.T. EamesArbor pressarbor presses
D116,269Aug. 22, 1939S. MandlArbor Press
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