Provisions similar to this section were contained in section
1811
(c)(1), (2) of this title, prior to the general amendment and renumbering of act Aug. 1, 1946, by act Aug. 30, 1954.
1974—Subsec. (h).
Pub. L. 93–377 substituted “September 1, 1979” for “September 1, 1974”.
1969—Subsec. (h).
Pub. L. 91–161 substituted “September 1, 1974” for “September 1, 1969”.
1964—Subsec. (h).
Pub. L. 88–394 substituted “September 1, 1969” for “September 1, 1964”.
1959—Subsec. (h).
Pub. L. 86–50 substituted “September 1, 1964” for “September 1, 1959”.