US PATENT SUBCLASS 73 / 603
.~.~.~ Acoustic holography

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

570  DF  VIBRATION {10}
584  DF  .~ By mechanical waves {13}
596  DF  .~.~ Beamed {10}
603.~.~.~ Acoustic holography {2}
604  DF  .~.~.~.~> Having means substituted for reference signal
605  DF  .~.~.~.~> Liquid or deformable surface holography

DEFINITION

Classification: 73/603

Acoustic holography:

(under subclass 596) Subject matter wherein the test or measurement involves acoustic holography employing sonic (i.e., acoustic) waves from the test body in formation of the hologram.

(1) Note. Included herein are imaging of an interior portion of the body as a flaw or discontinuity, determining surface defects or surface quality, etc.

SEE OR SEARCH CLASS

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

1+, for producing images of bodies by optical holography and subclass 901 for a cross reference art collection relating to acoustic holography.

367, Communications, Electrical: Acoustic Wave Systems and Devices,

7+, for producing images of underwater and underground bodies, respectively, by acoustic holography.