发明名称 Racquet with two independently strung faces
摘要 An elongated band with a T-shaped cross section is bent into the form of an ellipse and is attached to a handle to form a tennis racquet frame of conventional proportions. The stem of the T faces inwardly along the periphery of the ellipse. Conventional racquet string is wrapped around the elliptical portion of the band to form two parallel faces, each face having the form of a flat rectangular grid.
申请公布号 US3968966(A) 申请公布日期 1976.07.13
申请号 US19750574413 申请日期 1975.05.05
申请人 THE RAYMOND LEE ORGANIZATION, INC. 发明人 D'AQUANNI, CESARE A.
分类号 A63B51/06;(IPC1-7):A63B51/06 主分类号 A63B51/06
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