US PATENT SUBCLASS 96 / 57
.~.~ Precedent nonelectrical separator

Current as of: June, 1999
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96 /   HD   GAS SEPARATION: APPARATUS

15  DF  ELECTRIC FIELD SEPARATION APPARATUS (E.G., ELECTRICAL PRECIPITATOR, ELECTROSTATIC TYPE, ETC.) {17}
55  DF  .~ And serially arranged nonelectrical separator {3}
57.~.~ Precedent nonelectrical separator {1}
58  DF  .~.~.~> Separator is single porous filter

DEFINITION

Classification: 96/57

Precedent nonelectrical separator:

(under subclass 55) Apparatus in which electric field separation apparatus follows downstream of the nonelectrical separator.