发明名称 Versatile plurality mixer with rapid chance lot cycling and locking means
摘要 According to the present invention a portable hand held indicia selector is provided comprising an enclosed mixing housing with multiple numbered indicia spheres contained within the housing. The spheres are directed into a defined area of the mixing housing for viewing so that the directed numbered indicia may be used by the user to randomly select numbers. The housing has incorporated in it a locking device so that the directed numbered indicia are locked into position and may be released by the user into the mixing housing.
申请公布号 US4509755(A) 申请公布日期 1985.04.09
申请号 US19840607591 申请日期 1984.05.07
申请人 CHEATHAM, JAMES S. 发明人 CHEATHAM, JAMES S.
分类号 A63F7/04;G07C15/00;(IPC1-7):A63F7/04 主分类号 A63F7/04
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