Classification bulletin 139, containing classification definitions of the class revised by Classification Group of Patent Office to include all changes through order 47, dated Jan. 28, 1949; Class 318, Electricity, motive power systems.
Publication Title:
Classification bulletin 139, containing classification definitions of the class revised by Classification Group of Patent Office to include all changes through order 47, dated Jan. 28, 1949; Class 318, Electricity, motive power systems.
Display Title:
Classification bulletin 139, containing classification definitions of the class revised by Classification Group of Patent Office to include all changes through order 47, dated Jan. 28, 1949; Class 318, Electricity, motive power systems.
Corporate Agency Authors:
Patent Office and Commerce Dept.
Sort Author:
Patent Office
Date:
[1949.]
Publish Date ISO Format:
1949-01-01T00:00:00Z
Publication Start:
19490101
Publication End:
19491231
Corporate/Agency Author:
Patent Office
Publication month:
13
Publication year:
1949
SuDoc number:
C 21.3:139
Description:
[1]+132 p. il. 4°
Notes:
[Issued with perforations.]
Notes:
[Issued with perforations.] * For Sale by Superintendent of Documents. Paper, 50c.
Availability:
* For Sale by Superintendent of Documents. Paper, 50c.