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Patents Granted on 1807-04-__
Patents 1 - 15 of 20
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739XApr. 01, 1807T. GreenMode of making salt
740XApr. 01, 1807L. DuprePendulum screw
741XApr. 01, 1807C. ColverDouble forcing pumpspumps
742XApr. 01, 1807G. YouleCabouse stove for cookingstoves
743XApr. 01, 1807D. PeacockPloughplows or ploughs
744XApr. 01, 1807J. McIlvainMachine for dressing shingles and stavesshingle machines
745XApr. 01, 1807E. BigelowMachine for Cutting Nailsnail making machines
746XApr. 01, 1807J.A. PearceMachine for propelling boats, & etc. by oars, & etc.nautical propulsion apparatus
747XApr. 15, 1807A. CraigMethod of raising stumps from the groundstump elevators
748XApr. 17, 1807S.G. WhippleMode of applying bark for hats etc.milliner
749XApr. 17, 1807E. JencksMode of making fire brickbrick maker
750XApr. 18, 1807J. MixMain springs for carriagescarriage maker
751XApr. 18, 1807T. PopeConstruction of bridges
752XApr. 23, 1807B. LangdonSteelyardsteel maker
753XApr. 23, 1807A. WeaverApparatus for distillingdistilling apparatus
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