CFR›Title 7›Subtitle B›Chapter V›Part 504 ContainsSections 504.1–504.5CorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 PART 504—USER FEES Sections 504.1 § 504.1 General statement. 504.2 § 504.2 Fees for deposit and requisition of microbial cultures. 504.3 § 504.3 Payment of fees. 504.4 § 504.4 Exemptions from user fee charges. 504.5 § 504.5 Address. Authority31 U.S.C. 9701.Source50 FR 5365, Feb. 8, 1985, unless otherwise noted. Previous 503 Part 503—Conduct on Plum Island Animal Disease Center Next 505 Part 505—National Agricultural Library Fees for Loans and Copying