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- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Nov. 29, 1938
- SuDoc number:
- C 21.5/a 2:496/5
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Nov. 22, 1938
- SuDoc number:
- C 21.5/a 2:496/4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Nov. 15, 1938
- SuDoc number:
- C 21.5/a 2:498/3
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Nov. 8, 1938
- SuDoc number:
- C 21.5/a 2:496/2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Nov. 1, 1938
- SuDoc number:
- C 21.5/a 2:496/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Revised Sept. 1, 1938. 1938
- SuDoc number:
- C 21.2:T 67/938-2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Aug. 30, 1938
- SuDoc number:
- C 21.5/a 2:493/5
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Aug. 23, 1938
- SuDoc number:
- C 21.5/a 2:493/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Aug. 16, 1938
- SuDoc number:
- C 21.5/a 2:493/3
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Aug. 9, 1938
- SuDoc number:
- C 21.5/a 2:493/2