US PATENT SUBCLASS 422 / 132
.~.~ Closed loop

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

129  DF  CHEMICAL REACTOR {28}
131  DF  .~ Organic polymerization {5}
132.~.~ Closed loop

DEFINITION

Classification: 422/132

Closed loop:

(under subclass 131) Apparatus wherein the reactor is of the closed-loop type; i.e., one wherein substantially all of the

reaction mass is continuously recycled during operation.