US PATENT SUBCLASS 428 / 398
.~.~.~ Tubular or cellular

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

357  DF  COATED OR STRUCTUALLY DEFINED FLAKE, PARTICLE, CELL, STRAND, STRAND PORTION, ROD, FILAMENT, MACROSCOPIC FIBER OR MASS THEREOF {5}
364  DF  .~ Rod, strand, filament or fiber {9}
397  DF  .~.~ Particular cross section {3}
398.~.~.~ Tubular or cellular

DEFINITION

Classification: 428/398

(under subclass 397) Product containing one or more voids which are either coextensive or noncoextensive with the longitudinal extent of the product.

SEE OR SEARCH THIS CLASS, SUBCLASS:

34.1+, for a similar, hollow rod or strand which however is of much larger size usually and is disclosed as being used to conduct a fluid.

376, for a rod, strand, fiber or filament (1) coated, (2) impregnated or (3) with core wherein the constituents of the product form one or more tubular passageways lengthwise therein.

SEE OR SEARCH CLASS

57, Textiles: Spinning, Twisting, and Twining, appropriate subclasses for a tubular rod or strand wherein at least one constituent thereof is either twisted or wound, as claimed. 87, Textiles: Braiding, Netting, and Lace Making,

9, for a tubular braided strand.

138, Pipes and Tubular Conduits for a tubular product which has claimed structure relating the product to its use as a conduit; e.g., specific inner and outer wall composition, (particular seams, etc.). In the absence of claimed limitations as to wall structure, such a tubular stock material is classified in Class 428.

139, Textiles: Weaving,

387+, for a woven tubular strand or fabric.

313, Electric Lamp and Discharge Devices,

356, for a tubular or hollow sleeve type electrode.