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- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- July 24, 1928
- SuDoc number:
- C 21.5/a 2:372/4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- July 17, 1928
- SuDoc number:
- C 21.5/a 2:372/3
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- July 10, 1928
- SuDoc number:
- C 21.5/a 2:372/2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- July 3, 1928
- SuDoc number:
- C 21.5/a 2:372/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Apr. 24, 1928
- SuDoc number:
- C 21.5/a 2:369/4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Apr. 17, 1928
- SuDoc number:
- C 21.5/a 2:369/3
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Apr. 10, 1928
- SuDoc number:
- C 21.5/a 2:369/2
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Apr. 3, 1928
- SuDoc number:
- C 21.5/a 2:369/1
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Mar. 27, 1928
- SuDoc number:
- C 21.5/a 2:368/4
- Corporate/Agency Authors:
- Patent Office and Commerce Department
- Publisher:
- Patent Office
- Date:
- Mar. 20, 1928
- SuDoc number:
- C 21.5/a 2:368/3