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Classes 51 - 89

Class Date Established
51 1920
52 1965
53 1951
54 1901
55 1962
56 1919
57 1939
59 1907
60 1918
62 1958
63 1908
65 1962
66 1926
68 1937
69 1900
70 1936
71 1908
72 1965
73 1944
74 1934
75 1936
76 1904
79 1904
81 1901
82 1900
83 1959
84 1920
86 1901
87 1942
89 1901

 

United States Patent and Trademark Office
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Last Modified: 7/1/2010 9:27:41 AM