US PATENT SUBCLASS 285 / 424
.~ Sheet

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

422  DF  MATERIALS {2}
424.~ Sheet

DEFINITION

Classification: 285/424

(under subclass 422) Subject matter which includes material originally in sheet form.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles,

578, for an intermediate sheet-metal article or blank which is of nonrectangular shape.