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Manual of Classification. Basic Manual December 1996. Revision No.7, June 30,2000

机译:分类手册。基本手册1996年12月。修订版No.7,2000年6月30日

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The United States Patent Classification System (USPC) divides the entire set ofU.S. patents into searchable collections based on the technology claimed in the patents. The primary groupings of patents in USPC are called classes. Utility classes are based on (1) technology associated with a particular industry, or (2) subject matter having similar function use, or structure. Design classes are based on ornamental appearance. Plants are provided for in a single Plant class. Classes are subdivided into relatively small, ordered collections of patents called subclasses. A subclass is the smallest searchable collection of document in the USPC. The ordered listing of subclasses that make up a class is called a class schedule.

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