US PATENT SUBCLASS 285 / FOR 135
.~.~ With vent (285/153)

Current as of: June, 1999
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285 /   HD   PIPE JOINTS OR COUPLINGS

FOR 100  DF  SYSTEMS (285/120) {11}
FOR 132  DF  .~ Branched (285/150) {4}
FOR 135.~.~ With vent (285/153) {1}
FOR 136  DF  .~.~.~> Antisiphon (285/154)

DEFINITION

Classification: 285/FOR.135

Foreign art collection having one or more openings which function to vent gases to or from a system.