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A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
A23F5/26—Extraction of water soluble constituents
A23F5/262—Extraction of water soluble constituents the extraction liquid flowing through a stationary bed of solid substances, e.g. in percolation columns
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AT1111867A1966-12-201967-12-07Verfahren zur Herstellung von Instantkaffee
AT273640B
(de)