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Manual of Classification. Basic Manual December 1996. Revision No. 6, December211 31, 1999

机译:分类手册。 1996年12月基本手册。1999年12月21日修订第6号

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The United States Patent Classification (USPC) is a system for dividing the211u001eentire set of U.S. patents into searchable collections based on the technology 211u001eclaimed in the patents. The primary groupings of patents in USPC are called 211u001eclasses. Classes may be based on: (1) technology associated with a particular 211u001eindustry, (2) subject matter having similar function, use, or structure, or (3) 211u001eornamental appearance (design patents). There is also a class for plants. Classes 211u001eare subdivided into relatively small, ordered collections of patents called 211u001esubclasses. A subclass is the smallest searchable collection of documents in the 211u001eUSPC. The ordered listing of subclasses that make up a class is called a class 211u001eschedule.

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