19 CFR 191.51 : Customs Duties (§ 0.1 To Parts 400-599) — (§ 141.0 To Parts 193-199) — U.S. Customs And Border Protection, Department Of Homeland Security; Department Of The Treasury (Continued) (§ 141.0 To Parts 193-199) — Drawback (§ 191.0 To Appendix B To Part 191) — Completion Of Drawback Claims (§ 191.51 To § 191.53) — Completion of drawback claims.