Publish Year Decade: 1930 - 1939 / Sudoc Stem: C 21.5/a 6 - Blacklight Search Results

Start Over Publish Year Decade 1930 - 1939 Sudoc Stem C 21.5/a 6

1. Inventions. Changes in classification [of inventions, order 3417, 3420-23, 3425-26; Dec. 31, 1937-Apr. 27, 1938].

Corporate/Agency Authors:: Patent Office
Publisher:: Patent Office
Date:: [1938.]
SuDoc number:: C 21.5/a 6:938

2. Inventions. Changes in classification [of inventions], order 3381, 3383-86, 3388, 3390-93, 3396, 3399-3400, 34034; Jan. 28-June 30, 1937.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1937.]
SuDoc number:: C 21.5/a 6:937

3. Inventions. Changes in classification [of inventions], order 3343, 3346-47, 3349-50, 3353-55, 3358; Feb. 6-May 28, 1936.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1936.]
SuDoc number:: C 21.5/a 6:936

4. Inventions. Changes in classification [of inventions], order 3275, 3277-79, 3282-85, 3287-88, 3291-92, 3294; May 7-Dec. 4, 1934.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1935.]
SuDoc number:: C 21.5/a 6:934

5. Inventions. Changes in classification [of inventions], order 3295, 3297, 3302-3, 3305, 3309-10; Dec. 20, 1934-May 9, 1935.

Corporate/Agency Authors:: Patent Office
Publisher:: Patent Office
Date:: [1935.]
SuDoc number:: C 21.5/a 6:935

6. Inventions. Changes in classification [of inventions], order 3245, 3259, 3261, 3264-65, 3269, 3272-73; July 19, 1933-Apr. 27, 1934.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1934.]
SuDoc number:: C 21.5/a 6:934

7. Inventions. Changes in classification [of inventions], order 3207; Oct. 30, 1931.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1932.]
SuDoc number:: C 21.5/a 6:932

8. Inventions. Changes in classification [of inventions], order 3161. 3168, 3170, 3173, 3175; Sept. 13-Dec. 20, 1930.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1931.]
SuDoc number:: C 21.5/a 6:930/2

9. Inventions. Changes in classification [of inventions], order 3176, 3180, 3185, 3187, 3190, 3192, 3194, 3196; Dec. 31, 1930-June 19, 1931.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1931.]
SuDoc number:: C 21.5/a 6:931

10. Inventions. Changes in classification [of inventions], order 3137, 3142, 3144, 3148, 3160; Jan. 11-Aug. 25, 1930.

Corporate/Agency Authors:: Patent Office and Commerce Department
Publisher:: Patent Office
Date:: [1930.]
SuDoc number:: C 21.5/a 6:930