[Code of Federal Regulations] [Title 37, Volume 1] [Revised as of July 1, 1999] From the U.S. Government Printing Office via GPO Access [CITE: 37CFR1.24] [Page 26] TITLE 37--PATENTS, TRADEMARKS, AND COPYRIGHTS CHAPTER I--PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE PART 1--RULES OF PRACTICE IN PATENT CASES--Table of Contents Subpart A--General Provisions Sec. 1.24 Coupons. Coupons in denominations of three dollars, for the purchase of patents, designs, defensive publications, statutory invention registrations, and trademark registrations are sold by the Patent and Trademark Office for the convenience of the general public; these coupons may not be used for any other purpose. The three-dollar coupons are sold individually and in books of 50 for $150.00. These coupons are good until used; they may be transferred but cannot be redeemed. [56 FR 65153, Dec. 13, 1991] [[Page 27]]