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Patents for Henry Howson Jr.
Patents 1 - 12 of 12
First set of recordsLast set of records
188,604Mar. 20, 1877T.S. DisstonImprovement in Combined Pruning Shears and Sawmaking handsaws
189,199Apr. 03, 1877T.S. DisstonImprovement in insertible saw-teethinsertible saw teeth
192,632Jul. 03, 1877H. AlbrechtImprovement in clamping devices for fluting-machinespressing irons
192,673Jul. 03, 1877W.E. BrockImprovement in machines for manufacturing compound lumberspecialty machines
192,920Jul. 10, 1877B.F. JoslynWrenchnut wrenches
226,582Apr. 13, 1880E. MillerWrenchwrenches
227,622May 18, 1880W.W. GriscomElectro-Magnetic MotorDC motors
227,623May 18, 1880W.W. GriscomElectro-Magnetic MotorDC motors
235,326Dec. 07, 1880J. YerkesManufacture of Hammers and Hatchetshammers
282,304Jul. 31, 1883J. GarlandSaw setsaw sets
300,194Jun. 10, 1884E.M. Hugentobler, M.E. BeasleyBarrel stave shaping machinebarrel making machines
331,075Nov. 24, 1885F.B. MilesDrilling-machineradial drill presses
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