US PATENT SUBCLASS 454 / 137
.~.~ Including duct extending along roof

Current as of: June, 1999
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454 /   HD   VENTILATION

69  DF  VEHICLE (E.G., AUTOMOBILE, ETC.) {15}
136  DF  .~ Roof structure {1}
137.~.~ Including duct extending along roof {1}
138  DF  .~.~.~> Having exterior inlet opening over windshield

DEFINITION

Classification: 454/137

Including duct extending along roof:

(under subclass 136) Subject matter comprising an air carrying conduit stretching within or immediately adjacent the roof.