Grademark
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
A grademark normally consists of three symbols which indicate group, quality, and color. A letter is used to indicate group, a number to indicate quality, and a letter or letters to indicate color. For example, B3F means Leaf, good quality, orange color.
[42 FR 21092, Apr. 25, 1977. Redesignated at 51 FR 25027, July 10, 1986]
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