| http://www.w3.org/ns/prov#value | - Apparatus adapted to recover and concentrate essence from fruit juice, coffee or the like, comprising in combination an evaporator having a closed vapor space, means for exhausting the gases and vapors including essence and non-condensable gases from said vapor space Comprising a liquid ring vacuum pump of the class having a radially bladed rotor, a centrally disposed inlet, a centrally disposed o
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