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- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Nov. 18, 1930
- SuDoc number:
- C 21.5/a 2:400/3
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Nov. 11, 1930
- SuDoc number:
- C 21.5/a 2:400/2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Nov. 4, 1930
- SuDoc number:
- C 21.5/a 2:400/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Oct. 28, 1930
- SuDoc number:
- C 21.5/a 2:399/4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Oct. 21, 1930
- SuDoc number:
- C 21.5/a 2:399/3
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Oct. 14, 1930
- SuDoc number:
- C 21.5/a 2:399/2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Oct. 7, [1930]
- SuDoc number:
- C 21.5/a 2:399/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Sept. 30, 1930
- SuDoc number:
- C 21.5/a 2:398/5
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Sept. 23, 1930
- SuDoc number:
- C 21.5/a 2:398/4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Sept. 16, 1930
- SuDoc number:
- C 21.5/a 2:398/3