Index to the U.S. patent classification.

Format:

Government document

Journal/Periodical

Contributor:

United States. Patent and Trademark Office

Language:

English

Subjects (All):

Patents--United States--Classification--Indexes--Periodicals.

Patents.

United States.

Genre:

Classification.

Indexes.

Periodicals.

Physical Description:

volumes ; 28 cm

Annual

Dec. 1977-

Other Title:

Index to the United States patent classification

Index to classification Dec. 1977-

Index to the US patent classification

Index to the U.S. patent classification system

Continues:

United States. Patent Office. Index to classification

Place of Publication:

[Washington, D.C.] : U.S. Dept. of Commerce, Patent and Trademark Office : [Supt. of Docs., U.S. G.P.O., distributor]

Notes:

Title varies slightly: 1991, Index to the U.S. patent classification system.

Companion to: United States. Patent and Trademark Office. Office of Documentation Planning and Support. Manual of classification.

ISSN:

0161-9470

OCLC:

4010459