US PATENT SUBCLASS 73 / 656
.~.~.~ By optical holography

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

570  DF  VIBRATION {10}
649  DF  .~ Sensing apparatus {5}
655  DF  .~.~ With light beam indicator {2}
656.~.~.~ By optical holography

DEFINITION

Classification: 73/656

By optical holography:

(under subclass 655) Subject matter wherein indication or measurement involves the formation of an optical hologram.

SEE OR SEARCH CLASS

356, Optics: Measuring and Testing,

345+, for optical measuring and testing involving interferometry.

359, Optics: Systems (Including Communication) and Elements,

1+, for formation of an optical hologram.