US PATENT SUBCLASS 29 / 852
.~.~.~.~.~ By forming conductive walled aperture in base

Current as of: June, 1999
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29 /   HD   METAL WORKING

592  DF  METHOD OF MECHANICAL MANUFACTURE {54}
592.1  DF  .~ Electrical device making {14}
825  DF  .~.~ Conductor or circuit manufacturing {8}
829  DF  .~.~.~ On flat or curved insulated base, e.g., printed circuit, etc. {5}
846  DF  .~.~.~.~ Manufacturing circuit on or in base {5}
852.~.~.~.~.~ By forming conductive walled aperture in base {1}
853  DF  .~.~.~.~.~.~> With deforming of conductive path

DEFINITION

Classification: 29/852

By forming conductive walled aperture in base:

(under subclass 846) Process of shaping a hole in the base and attaching electrically conductive material to the walls of the hole.

SEE OR SEARCH CLASS

427, Coating Processes,

97, for a process of coating a hole wall of a printed circuit board.