The International index of patents
Subtitle: chemical and allied arts, 1790-1960.
Publisher: Interdex Corp.
Published: 1964
Place of publication: New York
Language: eng
Subjects: Chemicals -- Patents.; Patents -- United States.
Other titles: Index of patents.
Notes: "A guide to the chemical and allied patents granted by the United States during the period, grouped in the classes and subclasses of the United States Patent Office."
"Current patents are covered in the yearly volumes of...National catalog of patents."