US PATENT SUBCLASS 285 / 271
.~ With removable ball seat

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

261  DF  BALL AND SOCKET {8}
271.~ With removable ball seat

DEFINITION

Classification: 285/271

(under subclass 261) Devices including separable elements which bear the ball member within the socket.