Rates of duty assessed on a mail entry, whether assessed on the original entry or as amendments under § 145.24, are not binding for future importations. A binding ruling on tariff classification may be obtained in accordance with the procedures set forth in part 177 of this chapter.

[T.D. 73-175, 38 FR 13369, May 21, 1973, as amended at 38 FR 17469, July 2, 1973; T.D. 78-99, 43 FR 13061, Mar. 29, 1978]