US PATENT SUBCLASS 119 / 418
.~.~ With biologically isolating ventilation means

Current as of: June, 1999
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119 /   HD   ANIMAL HUSBANDRY

416  DF  CONFINING OR HOUSING {11}
417  DF  .~ For experimental purposes {3}
418.~.~ With biologically isolating ventilation means {1}
419  DF  .~.~.~> Utilizing air filtration device

DEFINITION

Classification: 119/418

With biologically isolating ventilation means:

(under subclass 417) Subject matter wherein the air or breathing matter supplied to the confined animal is such as to prevent contamination from the surroundings.

SEE OR SEARCH CLASS

600, Surgery,

21+, for isolation treatment chamber.