US PATENT SUBCLASS 422 / 239
.~ Reaction chamber includes at least one perforated, porous, or semipermeable wall and is adapted for holding solid reactant

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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

129  DF  CHEMICAL REACTOR {28}
239.~ Reaction chamber includes at least one perforated, porous, or semipermeable wall and is adapted for holding solid reactant

DEFINITION

Classification: 422/239

Reaction chamber includes at least one perforated, porous, or semipermeable wall and is adapted for holding solid reactant:

(under subclass 129) Apparatus wherein the reaction chamber comprises at least one perforated or porous wall and is designed for holding a solid reactant.