Indexing systems

Details Indexing systems Indexing systems

1988-06-01

1989-09-05

Yost, Frank T.

Printed matter

Indexed

Plurality of position markers

283 42, 40360, 40530, B42F 2100, B42F 2104, B42F 2102, G09F 1900

Patent

active

048631949

ABSTRACT:
An indexing system made of a plurality of arranged index sheets, each provided with indicia such as a letter, color, or symbol on an extended area thereof and a plurality of holes so that when the sheets are arranged one on the other, a viewer can see the specific indicia through the holes.

REFERENCES:
patent: 191885 (1877-06-01), Roberts
patent: 533811 (1895-02-01), Hon
patent: 1474663 (1923-11-01), Coe
patent: 4364586 (1982-12-01), Ott
patent: 4458435 (1984-07-01), Ackerman
patent: 4516871 (1985-05-01), Leitman

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