Tag: patent leather shoes

Watch the patent battle play out in patent ductum

FILE — In this Aug. 13, 2017 file photo, patent ducts are seen at a patent shop in Sacramento, Calif.The…

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Apple patent number 4,892,821

Next Big 2020 article Apple patent 4,893,092 article NextBig 2020 article 3D printing for the home and beyond source NextBig…

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