Mark-sense card

Details Mark-sense card Mark-sense card

1976-10-14

1979-04-17

Kilgore, Robert M.

Registers

Records

Particular code pattern

235487, 235456, G06K 1906, G06K 1900, G06K 714

Patent

active

041496701

ABSTRACT:
A mark-sense card is preprinted with alphameric characters one or more of which can be selectively activated by a stroke of a pencil or other writing implement. The card is also preprinted with at least one operator that can be selectively activated in a similar manner. The activated alphameric characters are to be interpreted in the normal way if the operator is not activated and in another way if the operator is activated. The addition of the operator thus greatly increases the amount of information that the card is capable of recording.

REFERENCES:
patent: 3380029 (1968-04-01), Goetz
patent: 3527927 (1970-09-01), Bijleveld
patent: 3626368 (1971-12-01), Lee
patent: 3845280 (1974-10-01), Dillon
patent: 3869600 (1975-03-01), Hochstadt
patent: 3886325 (1975-05-01), Dorr
patent: 3925780 (1975-12-01), Voorhis
patent: 3941976 (1976-03-01), Huhn

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