Classification bulletin 138, [containing] schedule and definitions of the class as established by Classification Group of Patent Office, by classification order 47, dated Jan. 28, 1949; Class 321, Electricity conversion systems.
Publication Title:
Classification bulletin 138, [containing] schedule and definitions of the class as established by Classification Group of Patent Office, by classification order 47, dated Jan. 28, 1949; Class 321, Electricity conversion systems.
Display Title:
Classification bulletin 138, [containing] schedule and definitions of the class as established by Classification Group of Patent Office, by classification order 47, dated Jan. 28, 1949; Class 321, Electricity conversion 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 21.3:138
Description:
[2]+28 leaves, 4°
Notes:
[Issued with perforations.]
Notes:
[Issued with perforations.] * For Sale by Superintendent of Documents. Paper 30c.
Availability:
* For Sale by Superintendent of Documents. Paper 30c.