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Patents for John Mathys
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberTitleClassification(s)
34,471Improvement in Tracto-Motive Engines180/10
35,480Improvement in the Manner of Working and Welding on the Steel in the Manufacture of Axes30/308.1, 76/103
37,865Improvement in Wrenches81/124.4, 81/125.1
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