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- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- [1941.]
- SuDoc number:
- C 21.5:526/1-4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1941.]
- SuDoc number:
- C 21.5:531/1-4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [1941.]
- SuDoc number:
- C 21.5:530/1-5
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1941
- SuDoc number:
- C 21.5:521/t.p.&cont.
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1941
- SuDoc number:
- C 21.5:529/t.p.&cont.
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- [July 1940]
- SuDoc number:
- C 21.5:516/1-5
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1940
- SuDoc number:
- C 21.5:514/t.p.&cont.
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1940
- SuDoc number:
- C 21.5:513/t.p.&cont.
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1940
- SuDoc number:
- C 21.5:519/t.p.&cont.
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- 1940
- SuDoc number:
- C 21.5:517/t.p.&cont.