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All Patents in class 409/63
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,111,784Mar. 22, 1938A.M. JohnsonHoning machinehoning machines
2,254,508Sep. 02, 1941H.B. BarrettHoning Toolhoning tools
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