272,370. Luginbuhl, G. R. Oct. 8, 1926. Indexing; tabs.-The index described in Specification 234,526 with reference to a railway guide is adapted for other books. The example shows an indexed catalogue for the various departments of a store, with a double page index located by a thumb notch and bearing arrows 1 leading from a point 2 representing the entrance to thumb notches 3 for locating the pages bearing information relating to the various departments.
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