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A. von Briesen

Patents. A Guide to Inventors, Manufacturers and Merchants, Who Seek to Secure and Maintain Patents for Inventions, Trade Marks and Copyrights. With ... the Complete Patent Law of the U. S.

Patents. A Guide to Inventors, Manufacturers and Merchants, Who Seek to Secure and Maintain Patents for Inventions, Trade Marks and Copyrights. With ... the Complete Patent Law of the U. S.

A. von Briesen