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Patents Granted on 1900-02-20
Patents 1 - 15 of 16
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NumberDatePatenteeTitleType
643,632Feb. 20, 1900A.J. CooperWrenchpipe wrenches
643,703Feb. 20, 1900H.P. WhiteDrill-grinding machinesdrill sharpening machines
643,707Feb. 20, 1900C.S. YarnellAbrading or polishing machinesanding machines
643,711Feb. 20, 1900H.W. Locke, W.F. CarltonSwing-back for Photographic Camerascameras
643,713Feb. 20, 1900O.E. ConverseBoring attachment for metal-working lathesmetal lathe accessories and attachments
643,720Feb. 20, 1900H.W. LockeSwing-back for Photographic Camerascameras
643,782Feb. 20, 1900J.R. ThameFiber Pulleyindustrial machine pulleys and belt drive mechanisms
643,876Feb. 20, 1900F. LanePressure Gagevacuum and pressure gauges
643,914Feb. 20, 1900E.F. ShawTrowel Grinding Machinegrinding machines
643,927Feb. 20, 1900O.S. WalkerDrill-grinderdrill sharpening machines
643,960Feb. 20, 1900G. Crighton, A.M. GrimondBobbin-making machinespecialty woodworking machines
643,991Feb. 20, 1900G.B. TaylorMachine for Cutting Spiral End Helical Teeth in Chuck Jawsgear making machines
643,995Feb. 20, 1900H.L. WhitmanCotton-presscotton presses
644,004Feb. 20, 1900J.F. CraigExplosive Eugineinternal combustion engines
644,027Feb. 20, 1900W. BainesHydrocarbon-Vaporizer for Explosive-Enginesfuel systems
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