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Patents for Arthur E. De Koning
Patents 1 - 3 of 3
First set of recordsLast set of records
1,800,450Apr. 14, 1931O.K. HillCut-off sawing machinecircular crosscut saws
2,007,563Jul. 09, 1935A.E. De KoningMechanical movementcircular crosscut saws
2,016,799Oct. 08, 1935A.E. De KoningTrimmer sawcircular crosscut saws
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