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Patents for Worcester Polytechnic Institute
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
425,839Apr. 15, 1890O.S. WalkerTwist-drill-grinding machinesharpening machines
1,010,574Dec. 05, 1911W.W. Bird, L.W. RawsonRaising and lowering mechanismdrill presses
1,064,700Jun. 17, 1913W.W. Bird, L.W. RawsonFeed devicedrill presses
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