26 C.F.R. § 1.1442-2
Exemption under a tax treaty
For regulations providing for a claim of reduced withholding tax under section 1442 by certain foreign corporations pursuant to the provisions of an income tax treaty, see § 1.1441-6.
For regulations providing for a claim of reduced withholding tax under section 1442 by certain foreign corporations pursuant to the provisions of an income tax treaty, see § 1.1441-6.