437 U.S. 443 98 S.Ct. 2441 57 L.Ed.2d 337 ZENITH RADIO CORPORATION, Petitioner,v.UNITED STATES. No. 77-539. Argued April 25, 1978. Decided June 21, 1978. Syllabus. Petitioner, an American manufacturer of consumer electronic products, filed a petition with the Commissioner of Customs, requesting assessment under ? 303 of the Tar ff Act of 1930 of countervailing […]