US PATENT SUBCLASS 99 / 474
.~.~ By forcing gas to circulate

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}
473  DF  .~ Including means to influence movement of gas within enclosure {4}
474.~.~ By forcing gas to circulate {2}
475  DF  .~.~.~> By plural means
476  DF  .~.~.~> Rotary pump

DEFINITION

Classification: 99/474

(under subclass 473) Device including means to propel gaseous matter into, within, or from the chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

518, for the application of a fluid to a grain hulling zone.

SEE OR SEARCH CLASS

237, Heating Systems,

2+, for heating system control.

241, Solid Material Comminution or Disintegration, 47+, for a gas swept comminuting zone.

454, Ventilation,

70+, 238, 255, and 340 for air pumps controlling pressure in a living enclosure.