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All Patents of Type: drop hammers
Patents 1 - 15 of 31
First set of recordsNext set of recordsLast set of records
27,925Apr. 17, 1860M. PeckAtmospheric Hammerdrop hammers
52,894Feb. 27, 1866T. ShawPower Hammerdrop hammers
RE2,398Nov. 27, 1866T. ShawPower Hammerdrop hammers
68,740Sep. 10, 1867T.B. HarrisonPower Hammerdrop hammers
88,980Apr. 13, 1869T.T. ProsserImproved power-hammerdrop hammers
160,483Mar. 02, 1875N.C. StilesDrop Hammerdrop hammers
385,540Jul. 03, 1888H.J. BierhartPower Hammerdrop hammers
429,807Jun. 10, 1890P.D. DupontPower-hammer springdrop hammers
CA-39,771Aug. 10, 1892W.H. LawPower hammerdrop hammers
497,012May 09, 1893C.C. BradleyPower-hammerdrop hammers
545,188Aug. 27, 1895F. Lombard, F.C. BillingsDrop Hammerdrop hammers
547,197Oct. 01, 1895W.J. Belcher, F.C. BillingsDrop Hammerdrop hammers
CA-51,763Mar. 25, 1896F. Lombard, F.C. BillingsDrop Hammerdrop hammers
CA-51,764Mar. 25, 1896W.J. Belcher, F.C. BillingsDrop Hammerdrop hammers
CA-65,452Dec. 21, 1899W.H. LawPower hammerdrop hammers
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