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Patents Granted on 1844-04-??
Patents 1 - 3 of 3
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NumberDatePatenteeTitleType
3,550Apr. 17, 1844R.M. HoeInking-rollerprinter
3,551Apr. 17, 1844R.M. HoePrinting-pressprinter
RE62Apr. 30, 1844J.C. GillettImprovement in machines for cutting shinglesshingle machines
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