US PATENT SUBCLASS 174 / 120 R
.~.~ Plural or impregnated layers

Current as of: June, 1999
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174 /   HD   ELECTRICITY: CONDUCTORS AND INSULATORS

68.1  DF  CONDUITS, CABLES OR CONDUCTORS {15}
110 R  DF  .~ Insulated {21}
120 R.~.~ Plural or impregnated layers {7}
121 R  DF  .~.~.~> Fibrous or fabric with plastic or coating materials {4}
122 R  DF  .~.~.~> Fibrous or fabric {2}
120 C  DF  .~.~.~> Coated or impregnated
120 FP  DF  .~.~.~> Fluid-type cable paper
120 SC  DF  .~.~.~> Semiconducting
120 AR  DF  .~.~.~> Rubber
120 SR  DF  .~.~.~> Synthetic resin

Unofficial Alpha Subclasses: R C FP SC AR SR

DEFINITION

Classification: 174/120

(under subclass 110) Single conductor structures in which the insulation includes (a) two or more layers of insulating material or (b) a single insulating layer impregnated with a composition of matter.

(1) Note. In this subclass have been placed all structures within the above definition in which any insulating layer is other than fibrous, or fabric, or plastic, or coating material. For definitions of these terms, see the notes to subclass 121 of this class.

(2) Note. Where one of the layers comprises a material in powdered or granular form, see this class, subclass 118.

(3) Note. See Class 428, Stock Material or Miscellaneous Articles, subclasses 380+ for an insulated conductor which is no more than a wire or filament with a plurality of layers of coating materials thereon.