Key to the classifications of the patent offices of France, Germany, Austria, Netherlands, Norway, Denmark, Sweden, and Switzerland, in the library of the Patent Office
Edition: 3rd ed.
Series: Patent Office library series -- no. 1
Publisher: Printed for His Majesty's Stationery Office by Darling & Son
Published: 1915
Place of publication: London
Language: eng
Number of pages: 190
Subjects: Patents; Classification; Books; Technology
Notes: Includes bibliographical references and indexes.