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All Patents in class 409/27
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
1,286,327	Dec. 03, 1918	H.A. Howarth	Gear Cutting Machine	gear making machines
3,521,524	Jul. 21, 1970	R.A. Wassdorp, E.J. Hunkeler	Control Apparatus for Checking and Controlling Sequential Machine Operations	machine tool controls

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