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Inventors and Inventions
Language: en
Pages: 302
Authors: Henry Dircks
Categories: Industrial arts
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Subject List of Works on Sound and Light (including Music, Musical Instruments, and General Optical Instruments) in the Library of the Patent Office
Language: en
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Authors: Great Britain. Patent Office. Library
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Patent Office Library Subject Lists. New Series
Language: en
Pages: 426
Authors: Great Britain. Patent Office. Library
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