(under subclass 600) Subject matter in which the thickness variation of the material is due, at least in part, to the presence at the surface of the material of a component which does not cover the entire surface of the material.
(1) Note. This subclass only provides for the metal preform to be subsequently used in a printed circuit. If such a preform is labeled a "printed circuit" in a claim, but only the preform structure is positively recited, proper classification is in Class 428.
SEE OR SEARCH THIS CLASS, SUBCLASS:
141+, for nonmetallic* stock-material* having a nonuniform layer or component.
SEE OR SEARCH CLASS
29, Metal Working,
846+, for methods of making a printed circuit on a planiform insulator. 174, Electricity: Conductors and Insulators,
250+, for structured conductors, conduits and cables in a preformed panel circuit arrangement, and subclasses 126.1+ for conductor structures peculiar to that class.
