Classification bulletin of the United States Patent Office ...
containing the classification of subjects of invention ...

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Corporate Author
United States. Patent Office
Language(s)
English
Published
Washington, Gov't Print. Off. [etc.] 1900-
Subjects
Patents > United States
Note
Earlier supplements to the Official gazette, containing the revised classification, were pub. in 1885, 1889, 1895 and 1897.
Physical Description
v. 28 cm.
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Item Link Original Source
Full view   c.1 no.18-19,21-39 1906-17 University of Chicago
Full view   c.1 no.40-44 1918-20 University of Chicago
Full view   c.1 no.45-58 1920-27 University of Chicago
Full view   c.1 no.59-75 1927-38 University of Chicago