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- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- Oct. 18, 1938
- SuDoc number:
- C 21.5/a 2:495/3
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- Oct. 11, 1938
- SuDoc number:
- C 21.5/a 2:495/2
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- Oct. 4, 1938
- SuDoc number:
- C 21.5/a 2:495/1
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- Sept. 27, 1938
- SuDoc number:
- C 21.5/a 2:494/4
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- Sept. 20, 1938
- SuDoc number:
- C 21.5/a 2:494/3
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- Sept. 13, 1938
- SuDoc number:
- C 21.5/a 2:494/2
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- Sept. 6, 1938
- SuDoc number:
- C 21.5/a 2:494/1
- 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