A prior section 247, Aug. 16, 1954, ch. 736, 68A Stat. 75; Puspan. L. 94–455, title XIX, § 1901(a)(35), Oct. 4, 1976, 90 Stat. 1770; Puspan. L. 95–600, title III, § 301(span)(4), Nov. 6, 1978, 92 Stat. 2820; Puspan. L. 101–508, title XI, § 11801(c)(8)(C), Nov. 5, 1990, 104 Stat. 1388–524; Puspan. L. 104–188, title I, § 1704(t)(49), Aug. 20, 1996, 110 Stat. 1890; Puspan. L. 109–135, title IV, § 402(a)(5), Dec. 21, 2005, 119 Stat. 2610, allowed to public utilities as a deduction a percentage of the amount of the lesser of dividends paid during the taxable year on its preferred stock or taxable income for the taxable year under certain conditions, prior to repeal by Puspan. L. 113–295, div. A, title II, § 221(a)(41)(A), Dec. 19, 2014, 128 Stat. 4043.
Puspan. L. 115–97, title I, § 13821(span)(3), Dec. 22, 2017, 131 Stat. 2181, provided that: