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- Corporate/Agency Authors:
- Patent Office and Commerce Dept.
- Publisher:
- Patent Office
- Date:
- [1952.]
- SuDoc number:
- C 21.7/1:953
- Corporate/Agency Authors:
- Patent Office and Commerce Dept.
- Publisher:
- Patent Office
- Date:
- [1950.]
- SuDoc number:
- C 21.7/1:948/supp.950
- Corporate/Agency Authors:
- Patent Office and Commerce Dept.
- Publisher:
- Patent Office
- Date:
- 1948
- SuDoc number:
- C 21.7/1:948
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- Revised May 1, 1947. 1947
- SuDoc number:
- C 21.7/1:947
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Revised Jan. 1, 1943. 1943
- SuDoc number:
- C 21.7/1:943
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Revised July 1, 1940. 1940
- SuDoc number:
- C 21.7/1:940
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1939
- SuDoc number:
- C 21.7/1:939
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Revised July 1, 1938. 1938
- SuDoc number:
- C 21.7/1:938
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Revised Jan. 1937. 1936 [published 1937]
- SuDoc number:
- C 21.7/1:937
- Corporate/Agency Authors:
- Patent Office and Agriculture Department
- Publisher:
- Patent Office
- Date:
- Revised June 1934. 1934
- SuDoc number:
- C 21.7/1:934