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- 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
- Publisher:
- Patent Office
- Date:
- June 26, 1928
- SuDoc number:
- C 21.5/a 2:371/4
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- June 19, 1928
- SuDoc number:
- C 21.5/a 2:371/3
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- June 12, 1928
- SuDoc number:
- C 21.5/a 2:371/2
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- June 5, 1928
- SuDoc number:
- C 21.5/a 2:371/1
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- May 29, 1928
- SuDoc number:
- C 21.5/a 2:370/5
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- May 22, 1928
- SuDoc number:
- C 21.5/a 2:370/4
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- May 15, 1928
- SuDoc number:
- C 21.5/a 2:370/3
- Corporate/Agency Authors:
- Patent Office
- Publisher:
- Patent Office
- Date:
- May 8, 1928
- SuDoc number:
- C 21.5/a 2:370/2