CFR›Title 43›Subtitle B›Chapter II›Part 2450 ContainsSubpart 2450CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 PART 2450—PETITION-APPLICATION CLASSIFICATION SYSTEM Subparts 2450 Subpart 2450—Petition-Application Procedures Sections 2450.1–2450.8 Source35 FR 9563, June 13, 1970, unless otherwise noted. Previous 2440 Part 2440—Segregation by Classification Next 2460 Part 2460—Bureau Initiated Classification System