Overlay code selection system

Details Overlay code selection system Overlay code selection system

1982-04-01

1985-01-08

Bell, Paul A.

Binder device releasably engaging aperture or notch of sheet

Sheet

283 70, 40359, B42F 1300, B42D 1500, B42F 2110

Patent

active

044924879

ABSTRACT:
Coded data imprinted in close spaced relation on data sheets retained within a loose leaf binder is selectively marked through cutout openings in a transparent overlay mask. The mask is positioned in proper alignment over each of the data sheets by means of aligning slots through which at least two of the binder rings project.

REFERENCES:
patent: 1443092 (1923-01-01), Pettis
patent: 2879608 (1959-03-01), Watkins
patent: 3089260 (1963-05-01), Gray
patent: 3557463 (1971-01-01), Perry et al.
patent: 3846915 (1974-11-01), Obermark et al.
patent: 4185934 (1980-01-01), Hodson

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