Patent Drawing for W. O. Barnes' Automobile - NARA - 7369160 (page 3).jpg
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Patent Drawing for W. O. Barnes' Automobile NARA 7369160 (page 3), 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 W. O. Barnes' Automobile
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W.O.バーンズのNARA 7369160(page 3)、米国国立公文書館管理局の特許図面: Utility Patent Drawings、米国国立公文書記録管理局の画像: W.O.バーンズの Automobileのための特許図面
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patent law patent patent right patency patented