US PATENT SUBCLASS 264 / 154
.~ Making hole or aperture in article

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

138  DF  WITH SEVERING, REMOVING MATERIAL FROM PREFORM MECHANICALLY, OR MECHANICALLY SUBDIVIDING WORKPIECE {10}
154.~ Making hole or aperture in article {1}
155  DF  .~.~> By punching or drilling {1}

DEFINITION

Classification: 264/154

(under subclass 138) Processes in which the operation involves either forming an aperture or opening (1) which does not completely penetrate the article and material is removed or (2) which completely penetrates the article with or without material removal therefrom.

(1) Note. Search subclasses 284 and 293 for embossing operations in which surface deformations are made in a preform which do not extend through the preform and no material is removed.