US PATENT SUBCLASS 277 / FOR 147
.~.~.~ Transversely symmetrical (277/145)

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

FOR 140  DF  WITH DISTINCT RADIALLY ACTING BIAS(277/138) {16}
FOR 145  DF  .~ With axially component (277/143) {1}
FOR 146  DF  .~.~ Complementary inclined surfaces (277/144) {1}
FOR 147.~.~.~ Transversely symmetrical (277/145)

DEFINITION

Classification: 277/FOR.147

Foreign art collections wherein the elements which comprise the inclined surfaces are symmetrical to a plane transverse of the axis of the packing.