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May 12 Patent of the Day

Posted on May 12, 2016 by bwheelock

On May 12, 1925, U.S. Patent No. 1,537,879, issued to A.L. Putnam on  a Pneumatic Treated Vehicle Tire.

12-May

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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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