1976-05-19
1978-01-31
Grieb, William H.
35 9R, 35 48A, G09B 300
Patent
active
040707687
ABSTRACT:
A system for locating information in an information bank comprises an index and a key for the index. The index comprises a sheet bearing an array of indicia identifying the locations of information in the information bank. The key comprises a card having an array of closed windows which are registrable with the array of indicia and bearing legends for guiding a person to open a particular one or more of the windows depending upon the information which is to be located in the information bank. The window or windows which are opened register with indicia identifying the location of the information which is to be located in the information bank when the array of windows is registered with the array of indicia. The method of using the system to locate information in an information bank comprises opening at least one of the windows on the card in accordance with the legends on the card, registering the array of windows on the card with the array of indicia on the index sheet and reading the indicia appearing through the open windows to thereby determine the location of the desired information in the information bank.
REFERENCES:
patent: 1526717 (1925-02-01), Nunez
patent: 2155814 (1939-04-01), Wolfe
Grieb William H.
Hamburg C. Bruce
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