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Patents Granted on 1800-__-__
Patents 1 - 15 of 42
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NumberDatePatenteeTitleType
267XJan. 16, 1800O. EvansImprovement on stoves and gratesstoves
268XFeb. 04, 1800S. GorhamMachine for spinning rope, yarn and twinerope maker
269XFeb. 04, 1800S. ConstantComposition to preserve wood, brick, etc.carpenter
270XFeb. 04, 1800J.G. GebhardExtracting oil from palma christi
271XFeb. 07, 1800B. BolithoMachine for pounding rice, gunpowder, etc.miller
272XFeb. 07, 1800W. ShotwellMetal Boxes for Wood or Iron to TurnI Inwheelwright
273XFeb. 12, 1800J.J. HawkinsImprovement in piano fortesmusic instrument maker
274XFeb. 12, 1800H. Killey, IIMethod of covering salt vats from the weathersalt making apparatus
275XFeb. 12, 1800P. LyonEngine for throwing watersteam pumps
276XFeb. 12, 1800N. LaddExtracting Essence of Sumack, Fera, etc for Tanningleatherworker
277XFeb. 20, 1800J. CoxRaising or Lifting Hides in Tanningleatherworker
278XFeb. 20, 1800B. TylerGrist Millgrist mills
GB-2,378Feb. 28, 1800P. CrowtherApplying steam engine to rotative axis
279XMar. 03, 1800J. PercyImprovement in dying blue
280XMar. 15, 1800W. HarrisLathe or loom for weavinglooms
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