A history of patent classification in the United States Patent and Trademark Office /

Bibliographic Details
Main Author:	Rotkin, Irving J.
Other Authors:	Dood, Kendall J., Thexton, Matthew A.
Format:	Government Document Book
Language:	English
Published:	Arlington, Va. : Patent Documentation Society, 1999, 2000 reprint.
Edition:	Rev.
Subjects:	Patents > United States > Classification. Patents > United States > Classification > History.

Evans: US Documents (Annex 5th floor)