37 CFR Part 6 Index
Classification of Goods and Services

Taken from USPTO Website (Last revised Jan. 2018)

6 - Classification of Goods and Services

Classification Of Goods And Services Under The Trademark Act

6.1: International schedule of classes of goods and services

6.2: Prior U.S. schedule of classes of goods and services

6.3: Schedule for certification marks

6.4: Schedule for collective membership marks