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- Corporate/Agency Authors:
- Patent Office and Interior Department
- Publisher:
- Patent Office
- Date:
- [1920.]
- Corporate/Agency Authors:
- Patent Office and Interior Department
- Publisher:
- Patent Office
- Date:
- [1920.]
- Corporate/Agency Authors:
- Patent Office and Interior Department
- Publisher:
- Patent Office
- Date:
- [1920.]
- Corporate/Agency Authors:
- Patent Office and Interior Department
- Publisher:
- Patent Office
- Date:
- 1920
- Corporate/Agency Authors:
- Patent Office and Interior Department
- Publisher:
- Patent Office
- Date:
- Dec. 8, 1919
- Corporate/Agency Authors:
- Patent Office and Interior Department
- Publisher:
- Patent Office
- Date:
- Revised Jan. 1, 1916. Reprint [with changes] Nov. 6, 1919
- Corporate/Agency Authors:
- Patent Office and Interior Department
- Publisher:
- Patent Office
- Date:
- [September 1919]
- Corporate/Agency Authors:
- Patent Office and Interior Department
- Publisher:
- Patent Office
- Date:
- [August 1919]
- Corporate/Agency Authors:
- Patent Office and Interior Department
- Publisher:
- Patent Office
- Date:
- July 11, 1919
- Corporate/Agency Authors:
- Patent Office and Interior Department
- Publisher:
- Patent Office
- Date:
- June 27, 1919