US PATENT SUBCLASS 285 / 316
.~.~.~.~ Spring-biased sleeve

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

305  DF  ESSENTIAL CATCH {7}
308  DF  .~ With manipulator {4}
314  DF  .~.~ Cam sleeve {1}
315  DF  .~.~.~ Reciprocating sleeve {1}
316.~.~.~.~ Spring-biased sleeve

DEFINITION

Classification: 285/316

(under subclass 315) Subject matter including spring means to bias the sleeve.