Examiner handbook on the use of the U.S. patent classification system
By: Classification Operations, Search and Information Resources Administration.
Contributors: United States. Patent and Trademark Office. Search and Information Resources.
Publisher: U.S. Dept. of Commerce, Patent and Trademark Office
Published: 1999
Place of publication: [Washington, D.C.]
Language: eng
Number of pages: 52
Subjects: Patents -- United States -- Classification -- Handbooks, manuals, etc
Genres: Handbooks, manuals, etc.
Notes: "Rev. date 2/99."

Cover title.

Includes index.