发明名称 STRING CONSTRUCTION FOR A SPORTS RACKET
摘要 <p>A twisted string (10) for use in a sports racket comprising a common multi-sided cross-sectional configuration (14), an outer surface including an oriented twist configuration having a plurality of indentations (28) spaced successively from one another about the periphery of the outer surface and collectively extending along the length of the twisted string.</p>
申请公布号 WO1989007670(A1) 申请公布日期 1989.08.24
申请号 US1989000366 申请日期 1989.01.30
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