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- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1941
- SuDoc number:
- C 21.12:40/p.21-22, rev.
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- 1941
- SuDoc number:
- C 21.12:940/p.137, rev., etc.
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1941
- SuDoc number:
- C 21.12:940/p.283,rev.,etc.
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1941
- SuDoc number:
- C 21.12:940/p.27-28,rev.,etc.
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1941
- SuDoc number:
- C 21.12:940/p.15, rev., etc.
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- [1941.]
- SuDoc number:
- C 21.12:940/errata 940-2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1941.]
- SuDoc number:
- C 21.12:940/errata 941
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1941.]
- SuDoc number:
- C 21.10:P 278
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- [1941.]
- SuDoc number:
- C 21.10:P 442
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1941.]
- SuDoc number:
- C 21.10:P 53