US PATENT SUBCLASS 285 / 219
.~ Screw

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

189  DF  END TO SIDE OR PLATE (E.G., REINFORCEMENT) {11}
219.~ Screw {2}
220  DF  .~.~> With packing
221  DF  .~.~> Necked plate

DEFINITION

Classification: 285/219

(under subclass 189) Subject matter in which a pipe end is threaded into a plate aperture.

SEE OR SEARCH THIS CLASS, SUBCLASS:

355, for a packed screw joint.

390+, for a screw coupling. See the Search Notes thereunder.