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Patents Granted on 1804-06-__
Patents 1 - 4 of 4
First set of recordsLast set of records
GB-180,402,772Jun. 07, 1804A. WoolfParallel compound steam enginesteam engines
560XJun. 08, 1804M. French, M. AllisonNail Machinenail making machines
561XJun. 08, 1804A. SpencerImprovement in making thimbles
562XJun. 30, 1804W. TunstallMachines for clearing grain from straw
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