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Patents for Central Machine Works Co.
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,601,793Oct. 05, 1926H.E. CullenBrick-molding machinemanufacturing bricks and tiles
3,300,209Jan. 24, 1967C. FriisSpring controlled and cushioned springboard devices
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