7 U.S. Code § 4813 - Refunds
(a) Demand for refund; persons eligibleNotwithstanding any other provision of this chapter, prior to the approval of the continuation of an order pursuant to the referendum required under section 4811(a) of this title, any person shall have the right to demand and receive from the Board a refund of an assessment collected under section 4809 of this title if such person—
(b) Form and time within which demand to be made
(c) Payment of refund on submission of satisfactory proofSuch refund shall be made not later than 30 days after demand is received therefore  on submission of proof satisfactory to the Board that the producer, person, or importer—
did not collect such assessment from another producer, person, or importer.
 So in original. Probably should be “therefor”.
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