Classification bulletin 258, Feb. 16-Dec. 28, 1949, containing classification orders 49-61 pertaining to classification of subjects of invention revised by Classification Group of Patent Office.
Publication Title:
Classification bulletin 258, Feb. 16-Dec. 28, 1949, containing classification orders 49-61 pertaining to classification of subjects of invention revised by Classification Group of Patent Office.
Display Title:
Classification bulletin 258, Feb. 16-Dec. 28, 1949, containing classification orders 49-61 pertaining to classification of subjects of invention revised by Classification Group of Patent Office.
Corporate Agency Authors:
Patent Office and Commerce Dept.
Sort Author:
Patent Office
Date:
[1950.]
Publish Date ISO Format:
1950-01-01T00:00:00Z
Publication Start:
19500101
Publication End:
19501231
Corporate/Agency Author:
Patent Office
Publication month:
13
Publication year:
1950
SuDoc number:
C 21.3:258
Description:
66 leaves, il. 4°
Notes:
* For Sale by Superintendent of Documents. Paper, 30c
Availability:
* For Sale by Superintendent of Documents. Paper, 30c