US PATENT SUBCLASS 73 / 578
.~.~ Electromagnetic drive

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

570  DF  VIBRATION {10}
577  DF  .~ Fatigue study {1}
578.~.~ Electromagnetic drive

DEFINITION

Classification: 73/578

Electromagnetic drive:

(under subclass 577) Subject matter wherein the body or body supporting unit is vibrated by direct application of electromagnetic action thereto.