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- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Jan. 21, 1930
- SuDoc number:
- C 21.5/a 2:390/3
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Jan. 14, 1930
- SuDoc number:
- C 21.5/a 2:390/2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Jan. 7, 1930
- SuDoc number:
- C 21.5/a 2:390/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1930.]
- SuDoc number:
- C 21.10:Ab 82
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1930.]
- SuDoc number:
- C 21.10:Ar 54
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1930.]
- SuDoc number:
- C 21.10:B 122
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1930.]
- SuDoc number:
- C 21.10:B 146
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1930.]
- SuDoc number:
- C 21.10:B 438/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1930.]
- SuDoc number:
- C 21.10:B 438/2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1930.]
- SuDoc number:
- C 21.10:B 489