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- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- [1937.]
- SuDoc number:
- C 21.5/a 4:477/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1937.]
- SuDoc number:
- C 21.10:On 2
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- [1937.]
- SuDoc number:
- C 21.10:Ov 2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1937.]
- SuDoc number:
- C 21.10:P 197
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Revised Jan. 1937. 1936 [published 1937]
- SuDoc number:
- C 21.7/1:937
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1937
- SuDoc number:
- C 21.12:929/p.71, rev., etc.
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- [1937.]
- SuDoc number:
- C 21.5/a 1:477/1-4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1937.]
- SuDoc number:
- C 21.5/a 1:481/1-5
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- [1937.]
- SuDoc number:
- C 21.5/a 1:485/1-4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1937.]
- SuDoc number:
- C 21.5/a 1:475/1-4