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Patents Granted on 1821-12-??
Patents 1 - 15 of 24
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NumberDatePatenteeTitleType
3,410XDec. 01, 1821T. Skidman (Skidmore)Condensers for steam enginessteam engines
3,411XDec. 04, 1821J.M. YardMachine for making candlescandle making machinery
3,412XDec. 04, 1821J.G. VoughtChemical anti-dysenteric medicine
3,413XDec. 04, 1821G.H. ThompsonProtractorsprotractors
3,414XDec. 05, 1821E. SpencerMachine for hulling and shelling ricemiller
GB-182,104,622Dec. 05, 1821C. BroderipSteam enginessteam engines
3,415XDec. 06, 1821P. WilliamsonImprovement in bedsteads
3,416XDec. 07, 1821B. MarshallMachine used in the medicated steam bath
3,417XDec. 07, 1821J. BarronWashing machinewashing machines
3,418XDec. 07, 1821W. HartSetting saw teethsaw sets
3,419XDec. 11, 1821E. WalcottMaking cotton yarn without the aid of twist
3,420XDec. 11, 1821E. WarrenLoomlooms
3,421XDec. 12, 1821S. Ballou (Ballon)Threshing and winnowing machinewinnowing machines
3,422XDec. 13, 1821N.N. DestrehanMachine for raising water
3,423XDec. 13, 1821S. BakerSteam boilersstationary boilers
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