For provisions relating to tax-free sales of articles referred to in section 4061, see:
(a) Section 4221, relating to certain tax-free sales;
(b) Section 4222, relating to registration; and
(c) Section 4223, relating to special rules pertaining to further manufacture; and the regulations thereunder contained in Subpart N of this part. [T.D. 7727, 28 FR 3633, Apr. 13, 1963. Redesignated by T.D. 7834, 47 FR 42344, Sept. 27, 1982]