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February 20 Patent of the Day

Posted on February 20, 2016 by bwheelock

On February 20, 1872, Silas Noble and James P. Cooley were issued U.S. Patent No. 123,790 on an Improvement in Tooth-Pick Machines:

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About bwheelock

Education J.D., Washington University in St. Louis B.S.E. in Mechanical Engineering, Duke University
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