US PATENT SUBCLASS 277 / FOR 135
IMPELLER TYPE (277/133)


Current as of: June, 1999
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277 /   HD   SEAL FOR A JOINT OR JUNCTURE

FOR 135IMPELLER TYPE (277/133) {1}
FOR 136  DF  .~> Axially acting(277/134)


DEFINITION

Classification: 277/FOR.135

Foreign art collections comprising an impeller or baffle means, at least a part of which is rotatable, which means acts to deflect the path of dust or fluid to prevent passage of same through the juncture.