US PATENT SUBCLASS 283 / 85
.~ Utilizing electromagnetic radiation

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.~ Utilizing electromagnetic radiation {4}
86  DF  .~.~> Laser on incorporated hologram
87  DF  .~.~> And incorporated radiation filter {4}
92  DF  .~.~> On incorporated fluorescent material
93  DF  .~.~> Having dot pattern

DEFINITION

Classification: 283/85

Utilizing electromagnetic radiation:

(under subclass 72) Subject matter wherein either the hidden or obstructed information is made readable or understandable, or the larceny prevention or signalling occurs by the use of a specific frequency or range of frequencies of electromagnetic radiation.

(1) Note. The electromagnetic radiation utilized may be of any or a variation of frequencies such as infrared, visible, or ultraviolet; additionally, coherent monochromatic visible light, i.e., lasers, may be used with subject matter of this and indented subclasses to either reveal the information or to prevent or signal the attempted larceny.