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Patents for Martin Backstrom
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
651,816Jun. 19, 1900M. BackstromFriction driving-clutchindustrial machine clutches
669,407Mar. 05, 1901M. BackstromFeed mechanism for drilling, boring, or like machinesdrill presses
935,452Sep. 28, 1909M. BackstromBall-bearingdrill presses
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