US PATENT SUBCLASS 366 / 328.4
.~.~.~.~.~ Square aperture


Current as of: June, 1999
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366 /   HD   AGITATING

241  DF  STIRRER WITHIN STATIONARY MIXING CHAMBER {10}
279  DF  .~ Rotatable stirrer {15}
325.1  DF  .~.~ Relatively fixed plural elements {14}
328.2  DF  .~.~.~ Apertured element {1}
328.3  DF  .~.~.~.~ Noncircular aperture {1}
328.4.~.~.~.~.~ Square aperture


DEFINITION

Classification: 366/328.4

Square aperture:

(under subclass 328.3) Subject matter wherein the aperture is bounded by four sides substantially equal in length and intersect at right angles.