Mistake of fact.

(f) Mistake of fact. Mistake of fact means an action based upon a belief by a person that the material facts are other than they really are; it can be that a fact exists but is unknown to the person, or that he believes something is a fact when in reality it is not. An action is not a mistake of fact if the erroneous belief is caused by the neglect of a legal duty.

Source

19 CFR § 162.71

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Scoping language

When used in this subpart, the following terms shall have the meanings indicated:

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