发明名称 Swimmer's lap pacer
摘要 This invention is a device for keeping track of swimmer's time and distance; including a case containing a split timer, an elapsed timer and a lap counter in an electric circuit activated by a kickpad contacted by the swimmer at each lap.
申请公布号 US4518266(A) 申请公布日期 1985.05.21
申请号 US19830517681 申请日期 1983.07.27
申请人 DAWLEY, DALE K. 发明人 DAWLEY, DALE K.
分类号 G04F8/08;(IPC1-7):G04B19/24;G04F8/00 主分类号 G04F8/08
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