United States defensive publication.

Bibliographic Details
Previous Title:Defensive publications (OCoLC)19109316
Corporate Author: United States. Patent and Trademark Office
Format: Microform Journal
Language:English
Published: [Washington, D.C.] : [United States Patent and Trademark Office,], 1976-
Subjects:
Description
Published:Dec. 1976-
Item Description:Title from caption.
Title from film leader: US PTO defensive publications.
Microform.
Physical Description:volumes : illustrations
Publication Frequency:Monthly