Patents for inventions
abridgments of specifications relating to books, portfolios, card-cases, &c., A.D. 1768-1866
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Publication
1870 - Office of the Commissioners of Patents for Inventions, London, England
Language
English
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- Patents for inventions: abridgments of specifications relating to books, portfolios, card-cases, &c., A.D. 1768-1866
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