Roberts, John T. In Court of Customs and Patent Appeals, patent appeal no. 4181, in re John T. Roberts, piston ring; brief for commissioner of patents.

Publication Title:
Roberts, John T. In Court of Customs and Patent Appeals, patent appeal no. 4181, in re John T. Roberts, piston ring; brief for commissioner of patents.
Display Title:
Roberts, John T. In Court of Customs and Patent Appeals, patent appeal no. 4181, in re John T. Roberts, piston ring; brief for commissioner of patents.
Corporate Agency Authors:
Patent Office and Commerce Department
Sort Author:
Patent Office
Date:
[1939.]
Publish Date ISO Format:
1939-01-01T00:00:00Z
Publication Start:
19390101
Publication End:
19391231
Corporate/Agency Author:
Patent Office
Publication month:
13
Publication year:
1939
SuDoc number:
C 21.10:R 542
Description:
cover title, 11 p. 4°
Notes:
‡ Official Use. Not Available.
Availability:
‡ Official Use. Not Available.
Monthly Catalog date:
March 1939
Monthly Catalog issue number:
531
Monthly Catalog page number:
1
Monthly Catalog issue date:
1939-03-01T00:00:00Z
Record start page number:
311

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