Publisher: Patent and Trademark Office / Sudoc Stem: C 21.14/2 - Blacklight Search Results

Start Over Publisher Patent and Trademark Office Sudoc Stem C 21.14/2

1. Guide for patent draftsmen, [selected rules of practice relating to patent drawings]. Revised 1975.

Corporate/Agency Authors:: Patent and Trademark Office and Commerce Dept.
Publisher:: Patent and Trademark Office
Date:: [1975.]
SuDoc number:: C 21.14/2:D 78/975

2. Concordance, United States patent classification to international patent classification.

Corporate/Agency Authors:: Patent and Trademark Office and Commerce Dept.
Publisher:: Patent and Trademark Office
Date:: 3d edition. July 1974
SuDoc number:: C 21.14/2:C 74/974