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4h 7min, aug 30, 1983 y - Shoe insole having antibacterial and antifungal properties # US4401770A Inventor: Hance Award Date: 08/30/1983 Status: Expired
Added to timeline:
Engineering Timeline
By
William Wegand
16 Dec 2019
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0
279
Date:
4h 7min, aug 30, 1983 y
Now
~ 42 years ago
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