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  • 1.
    [发明专利]JP19730086652U _ 1973年07月16日
  • 2.
    [发明专利]JP19730039837 _ 1973年04月06日
  • 3.
    [发明专利]JP19730041035 _ 1973年04月11日
  • 4.
    [发明专利]JP19730006725 _ 1973年01月13日
  • 5.
    [发明专利]FR19730016438 _ SHERWOOD REFRACTORIES INC 1973年05月08日
  • [发明专利]US19730321534 _ GENERAL ELECTRIC COMPANY 1973年01月05日
    Method for preparing fast curing silanol-containing organopolysiloxane resins is provided. Organohalosilanes are hydrolyzed in a water immiscible organic solvent, utilizing acetone as a cosolvent. Selected portions of certain carboxylic acid salts are...
  • [发明专利]US19730349448 _ MCNISH, THOMAS GORDON 1973年04月09日
    Heat-insulating ceramic pieces are made, suitable for assembly to form the internal linings of gas turbine engine ducts, by producing and shaping an adherent mass of short fibre ceramic filaments and silica sol. After the shaped pieces have been dried...
  • [发明专利]US19730381301 _ HALLIBURTON CO,US 1973年07月20日
    A thixotropic cementing composition for use in oil and gas wells comprises a hydraulic cement slurry including as an additive a complex reaction product of a water soluble carboxyalkyl, hydroxyalkyl or mixed carboxyalkyl hydroxyalkyl ether of cellulos...
  • [发明专利]US19730417686 _ HERCULES INCORPORATED 1973年11月20日
    This invention relates to chemically modifying the surface of pyrolytic graphite by hydrogen terminating, then mercurating, the peripheral carbon atoms of the surface. The modified surface can be electroplated with mercury to provide a thin, continuou...
  • [发明专利]US19730412632 _ POLYSIUS AG 1973年11月05日
    A device for the heat treatment of material including a traveling grate conveyor for supporting material to be treated, at least one gas receiving heat treatment chamber and at least one grate space disposed above and below, respectively, a section of...
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