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All Patents in class 432/194
Patents 1 - 3 of 3
First set of recordsLast set of records
29,671Aug. 21, 1860W. ClemsonTempering Sawsmaking sawblades
65,946Jun. 18, 1867C. RichardsonImproved Apparatus for Tempering Steel Platestool making machines
169,736Nov. 09, 1875G.F. SimondsImprovement in Tempering and Forming Articles of Steeltool making machines
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