Yoshitaka Iwai |
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Documents |
| Date | Document Name & Details | Documents |
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| 3 July 2012 | Pneumatic Tire with Tread Having Crown Rib and Middle Ribs United States Patent US 8,210,219 B2 Yoshitaka Iwai for Sumitomo Rubber Industries, Ltd. |  PDF - 1.3MB - 13 pages |