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Patents Granted on 1840-07-??
Patents 1 - 6 of 6
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,669Jul. 01, 1840J. RingMachine for Removing Earth, etc.excavators
1,690Jul. 15, 1840J. MacGregor, Jr.Wood plane attachmentcutterhead machine accessories
1,691Jul. 15, 1840B. CushwaSelf-adjusting log-brace for sawmillssawmill carriages
1,692Jul. 18, 1840S. FairmanExpanding and Contracting or Universal Chuck for Lathesmetal lathe chucks
1,695Jul. 18, 1840E. FitzgeraldMachine for cutting match-splintsmatch making machines
1,705Jul. 30, 1840J. Clark, Jr.Machinery for turningwood lathes
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