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Patents for Howard Iron Works
Patents 1 - 7 of 7
First set of recordsLast set of records
33,550Oct. 22, 1861B.F. TaberImprovement in rotary pumpspumps
37,530Jan. 27, 1863B.F. TaberImprovement in machines for rossing barkdebarking machines
48,594Jul. 04, 1865E. SchlenkerBolt Cutter
91,199Jun. 15, 1869N. BaldwinImprovement in Visebench vises
156,066Oct. 20, 1874E. SchlenkerImprovement in visesbench vises
162,194Apr. 20, 1875E. SchlenkerImprovement in bolt-threading machinesmetal threading machines
166,730Aug. 17, 1875E. SchlenkerImprovement in hoisting-machines or elevatorselevators and lifts
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