US PATENT SUBCLASS 135 / 93
.~.~ Ventilating

Current as of: June, 1999
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135 /   HD   TENT, CANOPY, UMBRELLA, OR CANE

87  DF  PORTABLE SHELTER (I.E., TENT OR CANOPY) {18}
91  DF  .~ With heating, lighting, or ventilating {2}
93.~.~ Ventilating {1}
94  DF  .~.~.~> Of shelter roof

DEFINITION

Classification: 135/93

Ventilating:

(under subclass 91) Apparatus for supplying, removing or treating air for the shelter.

SEE OR SEARCH CLASS

454, Ventilation,

237+, for means for admitting and exhausting air from a building and subclasses 254+ for means for admitting air to a building.