US PATENT SUBCLASS 310 / 326
.~.~ Combined with damping structure

Current as of: June, 1999
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310 /   HD   ELECTRICAL GENERATOR OR MOTOR STRUCTURE

300  DF  NON-DYNAMOELECTRIC {4}
311  DF  .~ Piezoelectric elements and devices {17}
326.~.~ Combined with damping structure {1}
327  DF  .~.~.~> On back of piezoelectric element

DEFINITION

Classification: 310/326

Combined with damping structure:

(under subclass 311) Subject matter having the piezoelectric element combined with structure designed to absorb, or attenuate undesired energy emanated from or applied to the element.

(1) Note. Subject matter under subclass type does not include structure which merely mounts a piezoelectric resonator.

SEE OR SEARCH CLASS

181, Acoustics, appropriate subclasses for various specific acoustic wave attenuators or modifiers.