发明名称 Opinion sampling device
摘要 A polling device (10) includes a housing (12), pushbuttons (14, 16) mounted on the housing for receiving customer responses to an inquiry, circuitry for counting and storing the number of times each pushbutton (14, 16) is depressed, and a time delay circuit for disabling the counting circuitry for a predetermined period of time after one of the pushbuttons has been depressed for discouraging repetitive voting. A display unit (46) for reading and displaying the number of times each pushbutton (14, 16) has been depressed is also provided.
申请公布号 US5038367(A) 申请公布日期 1991.08.06
申请号 US19890459063 申请日期 1989.12.29
申请人 CASEY, WILLIAM;EAKINS, DARWIN 发明人 CASEY, WILLIAM;EAKINS, DARWIN
分类号 G06Q30/00;G07C13/00;G09B7/06 主分类号 G06Q30/00
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