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Classes 132 - 173

Class Date Established
132 1920
134 1943
135 1901
136 1925
137 1952
138 1935
139 1923
140 1910
141 1956
142 1899
144 1900
147 1899
148 1918
149 1961
150 1906
152 1939
156 1961
157 1899
159 1923
160 1942
162 1959
163 1902
164 1967
165 1962
166 1954
168 1906
169 1919
171 1957
172 1958
173 1963
United States Patent and Trademark Office
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Last Modified: 7/1/2010 9:27:34 AM