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John Marshall

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  • Ascot, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gas liquefaction method and apparatus
    • Patent number 4,758,257
    • Issue date Jul 19, 1988
    • The BOC Group plc
    • Robert G. Gates
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Refrigeration method and apparatus
    • Patent number 4,638,638
    • Issue date Jan 27, 1987
    • The BOC Group, PLC
    • John Marshall
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Gas refrigeration method and apparatus
    • Patent number 4,638,639
    • Issue date Jan 27, 1987
    • The BOC Group, PLC
    • John Marshall
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Permanent gas refrigeration method
    • Patent number 4,608,067
    • Issue date Aug 26, 1986
    • The BOC Group, plc
    • John Marshall
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...