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903.02 Basis and Principles of Classification [R-3] - 900 Prior Art, Classification, and Search

903.02 Basis and Principles of Classification [R-3]

*>Many of the principles that form the< basis of classification used in the U.S. Patent and Trademark Office** are set forth in the ** "Examiner Handbook to the U.S. Patent Classification System" which can be accessed from either the **>Intranet on the Classification Home Page (http://ptoweb:8081/) or the Internet on the Office of Patent Classification home page (http://www.uspto.gov/web/offices/opc/). Any questions not covered in this handbook can be directed to the Office of Patent Classification.<

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