Specification of John Aspinall : apparatus for obtaining extracts and decoctions (1856)
Aspinall, John · London : Great Seal Patent Office · leaf 3
A.D. 1856 . N° 704. Apparatus for Obtaining Extracts and Decoctions. ( This Invention did not proceed to the Great Seal.) PROVISIONAL SPECIFICATION left by John Aspinall at the Office of the Commissioners of Patents, with his Petition, on the 25th March 1856. I, John Aspinall, of Limehouse, in the…
Coffee · Plant Extracts · Dyes and dyeing · Great Britain
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