Author: Patent Office / Publisher: Patent Office / Sudoc Stem: C 21.12/2 - Blacklight Search Results

Start Over Author Patent Office Publisher Patent Office Sudoc Stem C 21.12/2

1. Index to classification.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [Apr. 1972.]
SuDoc number:: C 21.12/2:972

2. Index to classification, [Apr. 1966], supplement.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [September 1968]
SuDoc number:: C 21.12/2:966/supp.

3. Index to classification.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [Apr. 1966.]
SuDoc number:: C 21.12/2:966

4. index to classification.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [July 1963.]
SuDoc number:: C 21.12/2:963

5. Index to classification.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [Jan. 1960.]
SuDoc number:: C 21.12/2:960

6. Index to classification, Jan. 1956.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1956.]
SuDoc number:: C 21.12/2:956

7. Index to classification, Apr. 1, 1949.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1949.]
SuDoc number:: C 21.12/2:949