Notch and file system

Details Notch and file system Notch and file system

1971-05-03

1976-01-27

Thesz, Jr., Joseph M.

Registers

Calculators

Input-output calculator to indicator, printer, etc.

235 6112, G06K 2100

Patent

active

039354300

ABSTRACT:
The method or system of indexing cards for visual or machine filing and retrieval includes an index card having a plurality of notch areas located along at least a portion of the card edge with each of the notch areas being assigned at least two values and being adapted to receive a plurality of superimposable, separately identifiable notches to separately designate each notch area value.

REFERENCES:
patent: 2213607 (1940-09-01), Nevin
patent: 2834353 (1958-05-01), Rembold

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