[Code of Federal Regulations] [Title 37, Volume 1] [Revised as of July 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 37CFR2.23] [Page 268] TITLE 37--PATENTS, TRADEMARKS, AND COPYRIGHTS DEPARTMENT OF COMMERCE PART 2--RULES OF PRACTICE IN TRADEMARK CASES--Table of Contents Sec. 2.23 Serial number. Applications will be given a serial number as received, and the applicant will be informed of the serial number and the filing date of the application. [37 FR 931, Jan. 21, 1972]