General information on the fourth edition of the International patent classification.
Contributors: World Intellectual Property Organization.
Edition: 3rd ed.
Series: WIPO publication ;; no. 409
Publisher: World Intellectual Property Organization
Published: 1985
Place of publication: Geneva
Language: eng
Number of pages: 18
Subjects: Patents -- Classification.
Other titles: International patent classification (fourth edition 1984)
Notes: Cover title: International patent classification (fourth edition 1984)
"Patents" (6 leaves) laid in.