2000 ARCHIVE COPY, Manual of U.S. Patent Classification
U.S. PATENT AND TRADEMARK OFFICE
Information Products Division
2000 ARCHIVE COPY U.S. Patent Classification System
Entries as of June 30, 2000
Information Products Division -- Contacts
Questions regarding this report should be directed to:
U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441 Washington, DC 20231
tel: (703) 306-2600
FAX: (703) 306-2737 email: oeip@uspto.gov