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Patents Granted on 1800-03-??
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
279XMar. 03, 1800J. PercyImprovement in dying bluedyeing materials
280XMar. 15, 1800W. HarrisLathe or loom for weavinglooms
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