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Patents for John Mathys
Patents 1 - 3 of 3
First set of recordsLast set of records
34,471Feb. 18, 1862N.W. WheelerImprovement in Tracto-Motive Enginessteam carriages
35,480Jun. 03, 1862H. MannImprovement in the Manner of Working and Welding on the Steel in the Manufacture of Axesaxes
37,865Mar. 10, 1863G.W. GriswoldImprovement in Wrenchesnut wrenches
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