1401.02(b) Short Titles for International Trademark Classes 
The USPTO associates the following word titles with the respective international trademark class numbers:
3. Cosmetics and cleaning preparations
9. Electrical and scientific apparatus
11. Environmental control apparatus
16. Paper goods and printed matter
19. Non-metallic building materials
20. Furniture and articles not otherwise classified
31. Natural agricultural products
37. Building construction and repair
39. Transportation and storage
41. Education and entertainment
44. Medical, beauty and agricultural
These short titles are not an official part of the international classification. Their purpose is to provide a means to quickly identify the general content of numbered international classes. By their nature, these titles will not necessarily disclose the classification of specific items. The titles are not designed to be used for classification, but only as information to assist in the identification of numbered classes. To determine the classification of particular goods and services, it is necessary to refer to the Alphabetical List, the class headings of the international classes, and explanatory notes in the International Classification of Goods and Services for the Purposes of the Registration of Marks (Nice Classification), published annually by WIPO on its website. The full names of international classes are set forth in 37 C.F.R. §6.1. See TMEP §1401.02(a).
The short titles are printed in the Official Gazette in association with the international class numbers under MARKS PUBLISHED FOR OPPOSITION, Sections 1 and 2; TRADEMARK REGISTRATIONS ISSUED, PRINCIPAL REGISTER, Section 1; TRADEMARK REGISTRATIONS ISSUED UNDER SECTION 1(d), Sections 1 and 2; and SUPPLEMENTAL REGISTER, Sections 1 and 2.
The international trademark classification was adopted by the United States as its system of classification as of September 1, 1973. See 911 TMOG 210 (June 26, 1973). The use of short titles was announced in a notice at 924 TMOG 155 (July 16, 1974).