Classification bulletins 177-183, 200, 213-226, containing classification definitions of the classes revised by Classification Group of Patent Office. 179. Class 61, Hydraulic and earth engineering.
Publication Title:
Class 61, Hydraulic and earth engineering.
Display Title:
Classification bulletins 177-183, 200, 213-226, containing classification definitions of the classes revised by Classification Group of Patent Office. 179. Class 61, Hydraulic and earth engineering.
Series Title:
Classification bulletins 177-183, 200, 213-226, containing classification definitions of the classes revised by Classification Group of Patent Office.
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:(nos.)
Description:
[2]+7 p. 4°
Notes:
[Issued with perforations.]
Notes:
[Issued with perforations.] • Sent to Depository Libraries. Item 222
Availability:
* For Sale by Superintendent of Documents. Paper, 10c. and • Sent to Depository Libraries. Item 222