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- Corporate/Agency Authors:
- Patents Committee, House, House of Representatives, and Congress
- Publisher:
- Patents Committee, House
- Date:
- May 2, 1930
- Corporate/Agency Authors:
- Patents Committee, House, House of Representatives, and Congress
- Publisher:
- Patents Committee, House
- Date:
- 1930
- SuDoc number:
- Y 4.P 27/1:C 79/18