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Patents Granted on 1928-05-08
Patents 1 - 9 of 9
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,668,633May 08, 1928J.I. DepewPlowshare and Cultivator Shovel Straightenershovels
1,668,647May 08, 1928A.M. JohnsonFeed mechanism for drilling machinesdrill presses
1,668,746May 08, 1928A. TurnerRoll-Grinding Machinegrinding machines
1,668,927May 08, 1928J. StumpfNoncondensing steam enginesteam engines
1,669,006May 08, 1928H.L. JohnstonClutch mechanismindustrial machine clutches
1,669,134May 08, 1928N.T. KelsoMolded commutatorelectric motor making
1,669,137May 08, 1928A.J. LibertTool Holderlathe tool holders and tool posts
1,669,194May 08, 1928A.F. FroussardPortable Milling Machinemilling machines
1,669,319May 08, 1928R.M. BennethumWindmillwind power apparatus
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