Patent Drawing for J. A. Hillerich's Bat - NARA - 7369163.jpg
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Patent Drawing for J. A. Hillerich's Bat NARA 7369163, Patent drawings in the National Archives and Records Administration, US National Archives series: Utility Patent Drawings, Images from the National Archives and Records Administration, US National Archives location: other, Patent Drawing for J. A. Hillerich's Bat
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J・A・ヒレリヒのバットNARA 7369163の特許図面、米国国立公文書館管理局における特許図面、米国国立公文書館所蔵: 特許図面、米国国立公文書館管理局所蔵: 他、J・A・ヒレリヒのバットの特許図面
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patent law patent patent right patency patented