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Patents for John L. Knowlton
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
40,344Oct. 20, 1863J.L. KnowltonImproved sawing machinereciprocating saws
RE2,072Sep. 12, 1865J.L. KnowltonImprovement in sawmillssawmills
73,536Jan. 21, 1868J.L. KnowltonImprovement in circular-saw millscircular sawmills
76,471Apr. 07, 1868J.L. KnowltonImprovement in sawmillsreciprocating saws
106,374Aug. 16, 1870J.L. KnowltonImprovement in lath-machinelath making machines
157,843Dec. 15, 1874J.L. KnowltonImprovement in saw-millssawmill set works
162,392Apr. 20, 1875J.L. KnowltonImprovement in saw-sharpening machinessaw sharpening machines
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