发明名称 Method of collecting and recording answers to survey questions on a census directory
摘要 An overlay having a window frame includes a block of questions positioned to be lined up with an empty space on a census directory. Answers to the survey questions are written in the empty space on the census directory in the window frame. The method of this invention is well suited for taking political surveys using registered voters' lists by placing the overlay on the voters' list and moving it down the series of names on the list and recording the answers to the survey questions as they are provided.
申请公布号 US4781599(A) 申请公布日期 1988.11.01
申请号 US19860937891 申请日期 1986.12.04
申请人 DOWD, BRIAN J. 发明人 DOWD, BRIAN J.
分类号 G09B3/00;(IPC1-7):G09B3/00 主分类号 G09B3/00
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