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Patents Granted on 1840-07-15
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,690Jul. 15, 1840J. MacGregor, Jr.Wood plane attachmentcutterhead-machine accessories
1,691Jul. 15, 1840B. CushwaSelf-adjusting log-brace for sawmillssawmill carriages
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