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All Patents in class 266/261
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,245,273Jun. 10, 1941A.L. HartleyMethod of Flame Hardening Lathe Bedsmetal lathes
2,378,001Jun. 12, 1945F.E. DrummondFlame Hardening Torchtorches
4,065,249Dec. 27, 1977J.W. NelsonHeater for billets
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