"85th Congress 1st session, January 3-August 30, 1957."
Contents
No. 21. Proposals for improving the patent system, study no. 1 -- no. 22. Patent system and modern economy, study no. 2 -- no. 23. Distribution of patents issued to corporations (1939-55), study no. 3 -- no. 24. Opposition and revocation proceedings in patent cases, study no. 4 -- no. 63. International patent system and foreign policy, study no. 5.