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  • [发明专利]US19740483808 _ HARTMANN, HANS 1974年06月27日
  • 2.
    [发明专利]JP19740029590U _ 1974年03月14日
  • [发明专利]GB19740047035 _ SVENSKA RAYON AB 1974年10月30日
    1486322 Solvent extraction of zinc SVENSKA RAYON AB 30 Oct 1974 [31 Oct 1973 28 Jan 1974] 47035/74 Heading C1A Zinc is removed from an aqueous effluent obtained in rayon manufacture by a method which comprises:- (a) adjusting the free sulphuric acid c...
  • 4.
    [发明专利]JP19740081446U _ 1974年07月10日
  • [发明专利]GB19740029523 _ SUN ENG CO INC 1974年07月03日
    1415619 Mixing apparatus SUN ENG CO Inc 3 July 1974 [11 Jan 1974] 29523/74 Heading B1C A device, Figs. 1 and 2, for mixing flowing liquid comprises a cylindrical hollow vessel 10 having end plates 12, 13 and a centre sleeve 15, the liquid entering the...
  • 6.
    [发明专利]FR19740034667 _ NIPPON ELECTRIC CY LTD 1974年10月15日
  • [发明专利]US19740444703 _ GAZDA, HANS OTTO ERNST 1974年02月22日
    A method of deionizing a solution in which the solution is accelerated through a passage which has alternating narrow and wide portions. One side of the passage is maintained at a higher electrical potential than the other side and the ions migrating ...
  • [发明专利]US19740494550 _ PIERCE, ROGER C. 1974年08月05日
    Apparatus and method for the diffusion of less dense matter into a body of liquid. A floatation module is positioned upon the surface of the body of liquid and a draft tube is attached to the module extending below the module with the top end of the d...
  • [发明专利]US19740488644 _ NALCO CHEMICAL COMPANY 1974年07月15日
    Novel trans-1,4-dichloro-2-butene-dimethylamine ionene chloride polymers are prepared and used in water clarification applications, as an emulsion breaker, sludge dewatering and drainage aid, as a flocculant in treating water and as coagulants in sewa...
  • [发明专利]US19740444706 _ HENDRICK MANUFACTURING COMPANY 1974年02月22日
    Bouyant means float and at least partially submerge a vertically disposed clarifier duct, open at its upper and lower ends, at the surface of a body of water to be clarified. Breakwater means associated with the clarifier duct prevent an overflow of w...
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