... Manual of classification of patents ... January 1, 1940.
|Corporate Author:||United States.|
Washington, U. S. Govt. print. off., 1940.
At head of title: Department of commerce. United States Patent Office.
----...Index to classification of patents to accompany the Manual of classification of patents, revised to January 1, 1940 ... Washington, U.S. Govt. print. off., 1940. 1 v. 15x24 cm.
15 x 24 cm.
|Locate a Print Version:||
Find in a library
|Item Link||Original Source|
|Full view||University of Virginia|