US PATENT SUBCLASS 285 / 135.4
.~.~ Having coupling sleeve

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

134.1  DF  U-TYPE (E.G., RETURN BEND) {1}
135.1  DF  .~ Detachable {2}
135.4.~.~ Having coupling sleeve {1}
135.5  DF  .~.~.~> Secured by bolt

DEFINITION

Classification: 285/135.4

Having coupling sleeve:

(under subclass 135.1) Subject matter including an encircling element (e.g., a threaded nut) which secures the bight to the parallel leg portions.