US PATENT SUBCLASS 283 / 93
.~.~ Having dot pattern


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}
85  DF  .~ Utilizing electromagnetic radiation {4}
93.~.~ Having dot pattern


DEFINITION

Classification: 283/93

Having dot pattern:

(under subclass 85) Subject matter wherein the printed matter is provided with structure in the form of a specific arrangement of a plurality of small geometric marks generally made by an imprinting process.

(1) Note. The arrangement is generally readable or understandable only by a or by the use of machine or device and conveys a notice or signal, e.g., a VOID mark, thereby preventing either unauthorized copying or other use of the printed matter.