A history of patent classification in the United States Patent and Trademark Office
By: by Irving J. Rotkin and Kendall J. Dood.
Contributors: Dood, Kendall J.; Thexton, Matthew A.
Edition: Rev. August 1999.
Publisher: Patent Documentation Society
Published: 1999
Place of publication: Arlington, Va
Language: eng
Number of pages: 53
Subjects: Patents -- United States -- Classification.; Patents -- United States -- Classification -- History.
Genres: Classification.
Notes: "Edited by Matthew A. Thexton, PDS President and Patent Classifier in Technology Center 1700, U. S. Patent and Trademark Office"-T.p. verso.