CFR›Title 43›Subtitle B›Chapter II›Part 3860›Subpart 3864›43 CFR 3864.1 Citation43 CFR 3864.1CorpusDaily eCFRDisplayed edition2026-08-12Last updated2026-08-12 § 3864.1 Millsite patents: General. Next 3864.1-1 § 3864.1-1 Application for patent.