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(b)The notice referred to in subsection (a) shall consist of—
(1)the words “mask work”, the symbol *M*, or the symbol Ⓜ (the letter M in a circle); and
(2)the name of the owner or owners of the mask work or an abbreviation by which the name is recognized or is generally known.
United States Government work; public domain under 17 U.S.C. § 105.