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Patents for Robert O. Beardsley
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,715,813Jun. 04, 1929R.O. BeardsleyMounting for Screws and Taps
1,745,523Feb. 04, 1930R.O. BeardsleyApparatus for Testing Taper Threaded Screws
1,812,369Jun. 30, 1931R.W. Porter, R.O. BeardsleyProjecting Mechanism and Gear Staging Device
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