Patent Drawing for E. Kempshall's Golf Ball - NARA - 6920297.jpg
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Patent Drawing for E. Kempshall's Golf Ball NARA 6920297, 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 E. Kempshall's Golf Ball
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E.ケンプシャルのゴルフボールNARA 6920297の特許図面、米国国立公文書館管理局の特許図面、米国国立公文書館の画像: 別の場所、 E.ケンプシャルのゴルフボール用特許図面
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golf ball patent law patent patent right patency patented