Patent Drawing for C. Malings' Tennis Racket - NARA - 6104274.jpg
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Patent Drawing for C. Malings' Tennis Racket NARA 6104274, 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 C. Malings' Tennis Racket
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ja
C. マーリングスのテニスラケット NARA 6104274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:C. マーリングスのテニスラケットのための特許図面
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