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- Corporate/Agency Authors:
- Standards Bureau and Commerce Department
- Publisher:
- Standards Bureau
- Date:
- [1931.]
- SuDoc number:
- C 13.22/a:280
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1931.]
- SuDoc number:
- C 21.10:T 674
- Corporate/Agency Authors:
- Foreign and Domestic Commerce Bureau and Commerce Department
- Publisher:
- Foreign and Domestic Commerce Bureau
- Date:
- [1931.]
- SuDoc number:
- C 18.5/1a:T 675
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1931.]
- SuDoc number:
- C 21.5/a 3:409/2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1931.]
- SuDoc number:
- C 21.5/a 3:409/3
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1931.]
- SuDoc number:
- C 21.5/a 3:409/4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1931
- SuDoc number:
- C 21.5/3:930
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1931.]
- SuDoc number:
- C 21.5/a 3:404/2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1931.]
- SuDoc number:
- C 21.5/a 3:404/3
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1931.]
- SuDoc number:
- C 21.5/a 3:404/4