Great Britain. Commissioners of Patents
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Abridgments of the specifications relating to preservation of food / printed by order of the Commissioners of Patents.
Date: 1857
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Patents for inventions : abridgments of specifications relating to medicine, surgery, and dentistry, including artificial limbs, teeth, &c., apparatus for invalids, medical baths, &c., A.D. 1620-1866.
Great Britain. Commissioners of PatentsDate: 1872