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Master Classification File (MCF) / Patent Grant (Classification Sequence) (02...
Current U.S. classification information for all patent grants issued by the U.S. Patent and Trademark Office from 1790 to Present. Approximately 450 main divisions of... -
Index to U.S. Patent Classification (a.k.a., Classification Index File) (02/2...
Alphabetical list of subject headings which refer to specific U.S. classifications and subclassifications (classes/subclasses) of the U.S. Patent Classification (USPC) System –... -
Index to U.S. Patent Classification (a.k.a., Classification Index File) (02/2...
Alphabetical list of subject headings which refer to specific U.S. classifications and subclassifications (classes/subclasses) of the U.S. Patent Classification (USPC) System –... -
Master Classification File (MCF) / Patent Grant (Patent Grant Sequence) (02/2...
Current U.S. classification information for all patent grants issued by the U.S. Patent and Trademark Office from 1790 to Present. Approximately 450 main divisions of...
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