Section, act Aug. 24, 1937, ch. 744, 50 Stat. 748 , authorized issuance of patents for lands acquired under exchange provisions of former section 315g of this title . Statutory Notes and Related Subsidiaries Effective Date of Repeal Pub. L. 94–579, title VII, § 705(a) , Oct. 21, 1976 , 90 Stat. 2792 , provided that the repeal made by section 705(a) is effective on and after Oct. 21, 1976 . Savings Provision Repeal by Pub. L. 94–579 not to be construed as terminating any valid lease, permit, patent, etc., existing on Oct. 21, 1976 , see section 701 of Pub. L. 94–579 , set out as a note under section 1701 of this title . CFR Title Parts 43 17 , 4100