(under subclass 467) Devices including means for withdrawing gaseous matter from a food container to produce a sub-atmospheric pressure within the container.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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.
