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Patents for Charles H. Douglas
Patents 1 - 10 of 10
First set of recordsLast set of records
NumberDatePatenteeTitleType
107,346Sep. 13, 1870C.H. DouglasImprovement in saw-tablestablesaws
236,876Jan. 25, 1881C.H. DouglasSawsaw teeth
274,922Apr. 03, 1883C.H. DouglasCircular sawsawblades
363,123May 17, 1887C.H. DouglasChain cutter for mortising-machinesmortising machines
374,946Dec. 20, 1887C.H. DouglasChain mortising machinemortising machines
379,566Mar. 20, 1888C.H. DouglasChain mortising machinemortising machines
431,510Jul. 01, 1890C.H. DouglasSawsaw teeth
555,567Mar. 03, 1896C.H. DouglasSaw Sharperersaw gummers
603,007Apr. 26, 1898C.H. DouglasSaw Sharpenersaw gummers
1,208,521Dec. 12, 1916C.H. DouglasSaw Sharpenersaw gummers
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