US PATENT SUBCLASS 73 / 800
.~.~ Optical

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

760  DF  SPECIMEN STRESS OR STRAIN, OR TESTING BY STRESS OR STRAIN APPLICATION {12}
788  DF  .~ By loading of specimen (e.g., strength of material test) {16}
800.~.~ Optical

DEFINITION

Classification: 73/800

Optical:

(under subclass 788) Subject matter wherein the stress or strain indication includes strain responsive visual or photoresponsive means.

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762, for a specimen sheet or coating providing a direct visual indication of stress or strain of a specimen.

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356, Optics: Measuring and Testing,

32+, for optical strain analysis absent loading of the specimen.