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Patent status file : including an index to the CDR microfilm file ...

Bibliographic Details
Previous Title:Index to the CDR file
Corporate Authors: United States. Patent and Trademark Office, Research Publications, inc
Format: Serial
Language:English
Published: Woodbridge, CT : Research Publications, 1986-
Subjects:
Patents > United States > Periodicals.
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Description
Published:1973/1985-
Item Description:"The Patent status file is based on all reissues and changes listed in the Official gazette of the U.S. Patent Office."
Subtitle varies.
Volumes for <1973-1992-> published: Alexandria, VA : Derwent.
Physical Description:volumes ; 22-28 cm.
Publication Frequency:Annual, with each issue being cumulative
ISSN:1046-9893
Related Items:Issued as a cumulative index to the microfilm titles: CDR file; and: Patent status file (Woodbridge, Conn. : 1988).