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Patents Granted on 1869-04-__
Patents 1 - 15 of 78
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NumberDatePatenteeTitleType
88,535Apr. 06, 1869A.P. BarlowReciprocating mechanism for sawmillsawmills
88,559Apr. 06, 1869R.E. Hayden, W. EvansImprovement in Molds for Casting Augersmaking drills and augers
88,560Apr. 06, 1869O.V. FloraWrenchscrew adjust wrenches
88,579Apr. 06, 1869D. MurphyImprovement in hub-boring machinedrilling and boring
88,585Apr. 06, 1869G.H. PorterImproved Process of hardening Steel
88,612Apr. 06, 1869L.B. CrittendenCoffee Roastercoffee roasters
88,620Apr. 06, 1869A. FriedmanSteam Pumpsteam pumps
88,621Apr. 06, 1869E. FroggattImprovement in Wrench and Pincerscombination tools
88,623Apr. 06, 1869G.P. GansterImprovement in Wrenchscrew adjust wrenches
88,649Apr. 06, 1869J.B. MachamerImprovement in index for filing circular sawssawblades
88,679Apr. 06, 1869H.K. TraskImprovement in Device for Grinding Edged Toolstool grinders
88,708Apr. 06, 1869H.L. HallCorn Huskercorn huskers
88,725Apr. 06, 1869C. MarshImproved Mode of Finishing and Truing Emery Wheels, &c.wheel truing devices
88,760Apr. 06, 1869C. WhitehouseImprovement in bits and augersdrill bits
XC-3,131Apr. 08, 1869W. PrallImprovement on adjusting pinions on horse powers and other machineryanimal powered apparatus
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