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- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.5/a 3:496/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.5/a 3:496/3
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.5/a 3:496/4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.5/a 3:496/5
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.5/a 3:496/2
- Corporate/Agency Authors:
- Foreign and Domestic Commerce Bureau and Commerce Department
- Publisher:
- Foreign and Domestic Commerce Bureau
- Date:
- [1938.]
- SuDoc number:
- C 18.205:1/5
- Corporate/Agency Authors:
- Foreign and Domestic Commerce Bureau and Commerce Department
- Publisher:
- Foreign and Domestic Commerce Bureau
- Date:
- [1938.]
- SuDoc number:
- C 18.205:1/8
- Corporate/Agency Authors:
- Foreign and Domestic Commerce Bureau and Commerce Department
- Publisher:
- Foreign and Domestic Commerce Bureau
- Date:
- [1938.]
- SuDoc number:
- C 18.205:1/1
- Corporate/Agency Authors:
- Foreign and Domestic Commerce Bureau and Commerce Department
- Publisher:
- Foreign and Domestic Commerce Bureau
- Date:
- [1938.]
- SuDoc number:
- C 18.205:1/3
- Corporate/Agency Authors:
- Foreign and Domestic Commerce Bureau and Commerce Department
- Publisher:
- Foreign and Domestic Commerce Bureau
- Date:
- [1938.]
- SuDoc number:
- C 18.205:1/2