US PATENT SUBCLASS 285 / 422
MATERIALS


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

422MATERIALS {2}
423  DF  .~> Nonmetallic
424  DF  .~> Sheet


DEFINITION

Classification: 285/422

(under the class definition) Subject matter relating to the materials of which the coupling is made.

SEE OR SEARCH THIS CLASS, SUBCLASS:

43, for tent-type roof flashing.

148.12, for serial diverse joints comprising diverse materials.

238, for nonmetal to metal.

329, for a joint having a particular interface comprising diverse materials.

378, for a joint having a diverse material, metallic seat for a gasket. SEE OR SEARCH CLASS

75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder, Compositions and Loose Metal Particulate Mixtures,

228+, for a composition having a continuous phase of free metal made by consolidating metal particles.

428, Stock Material or Miscellaneous Articles, appropriate subclasses for a stock material product in the form of a single or plural layer web or sheet, especially

416, 418, 432+, 444, 450, and 457+ for a nonstructural composite web or sheet including a layer of metal.