US PATENT SUBCLASS 283 / 73
.~ Cryptogram (e.g., verification, tabular index)

Current as of: June, 1999
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283 /   HD   PRINTED MATTER

72  DF  HAVING REVEALABLE CONCEALED INFORMATION, FRAUD PREVENTER OR DETECTOR, USE PREVENTER OR DETECTOR, OR IDENTIFIER {15}
73.~ Cryptogram (e.g., verification, tabular index)

DEFINITION

Classification: 283/73

Cryptogram (e.g., verification, tabular index):

(under subclass 72) Subject matter wherein the printed matter is provided with obstructed or hidden information readable or understandable only by the use of a code associated with the obstructed or hidden information.

SEE OR SEARCH THIS CLASS, SUBCLASS:

17, for a cryptos:graphic record in which all of the information is viewable but in which there is a hidden meaning.

SEE OR SEARCH CLASS

380, Cryptography,

54, for this subject matter combined with an optical overlay.