Author: Patent Office / Publish Year Decade: 1950 - 1959 / Sudoc Stem: C 21.5 - Blacklight Search Results

Start Over Author Patent Office Publish Year Decade 1950 - 1959 Sudoc Stem C 21.5

1. Classification bulletin 405, Peb. 13-May 8, 1952, containing classification orders 119-126, pertaining to classification of subjects of invention revised by Classification Group of Patent Oflice.

Corporate/Agency Authors:: Patent Office and Commerce Dept.
Publisher:: Patent Office
Date:: [1952.]
SuDoc number:: C 21.5:405