US PATENT SUBCLASS 99 / 472
.~ Vacuum-producing means


Current as of: June, 1999
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99 /   HD   FOODS AND BEVERAGES: APPARATUS

467  DF  SUBJECTING FOOD TO AN ENCLOSED MODIFIED ATMOSPHERE {7}
472.~ Vacuum-producing means


DEFINITION

Classification: 99/472

(under subclass 467) Devices including means for withdrawing gaseous matter from a food container to produce a sub-atmospheric pressure within the container.

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454, for vacuum producing means associated with the treatment of dairy food.

SEE OR SEARCH CLASS

53, Package Making,

79+, for apparatus for evacuating a receptacle and closing the same, and subclasses 510+ for apparatus for subjecting the contents of a package to vacuum. 141, Fluent Material Handling, With Receiver or Receiver Coacting Means,

65, for apparatus of general utility for merely evacuating a receiver, and subclasses 59+ for apparatus for exhausting air from receivers in connection with filling same.