发明名称 Bowling shoe guide device
摘要 A bowling shoe guide device which enables a bowler to make quick visual reference to his shoe so as to align himself with respect to the flooring of a bowling alley. The device includes a plurality of sighting arrow members disposed on the upper forward toe portion of a bowling shoe, each being disposed substantially parallel to the longitudinal axis of the bowling shoe. Two of the sighting arrows are relatively spaced apart at a distance equal to the distance between adjacent crevices formed between the longitudinal boards of a conventional bowling alley.
申请公布号 US4199881(A) 申请公布日期 1980.04.29
申请号 US19780889043 申请日期 1978.03.22
申请人 FRANCIS, HERBERT E 发明人 FRANCIS, HERBERT E
分类号 A43B5/00;(IPC1-7):A43B5/00 主分类号 A43B5/00
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