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All Patents in class 72/21.5
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
3,115,858Dec. 31, 1963C.L. MitchellHydraulic Presshydraulic metalworking presses
4,653,300Mar. 31, 1987C.J. Crout, C.W. Frame, R.N. HarrisAdaptive, self-regulating forging hammer control systemdrop hammers
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