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- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Jan. 25, 1938
- SuDoc number:
- C 21.5/a 2:486/4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Jan. 18, 1938
- SuDoc number:
- C 21.5/a 2:486/3
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Jan. 11, 1938
- SuDoc number:
- C 21.5/a 2:486/2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Jan. 4, 1938
- SuDoc number:
- C 21.5/a 2:486/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.10:Al 79
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.10:Am 35/4
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.10:Am 35/5
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.10:Am 35/6
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.10:Au 76/2
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- [1938.]
- SuDoc number:
- C 21.10:B 388/4