Phillips Petroleum Co. v. Wisconsin
... that in 1954, the U.S. Supreme Court in Phillips Petroleum Co. v. Wisconsin began the regulation of wellhead natural gas prices, which lasted until Congress deregulated them on January 1, 1985?
... that in 1954, the <a href="./Supreme_Court_of_the_United_States" id="mwAi0" rel="mw:WikiLink" title="Supreme Court of the United States">U.S. Supreme Court</a> in <i id="mwAi4"><b id="mwAi8"><a href="./Phillips_Petroleum_Co._v._Wisconsin" id="mwAjA" rel="mw:WikiLink" title="Phillips Petroleum Co. v. Wisconsin">Phillips Petroleum Co. v. Wisconsin</a></b></i> began the regulation of wellhead <a href="./Natural_gas" id="mwAjE" rel="mw:WikiLink" title="Natural gas">natural gas</a> prices, which lasted until <a href="./United_States_Congress" id="mwAjI" rel="mw:WikiLink" title="United States Congress">Congress</a> <a href="./Deregulation" id="mwAjM" rel="mw:WikiLink" title="Deregulation">deregulated</a> them on <span about="#mwt20" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"Nowrap","href":"./Template:Nowrap"},"params":{"1":{"wt":"January 1"}},"i":0}}]}' id="mwAjQ" typeof="mw:Transclusion">January 1</span>, 1985?