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Mary J. Mathis

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  • Buffalo, NY, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Cryogenic liquid nitrogen production system
    • Patent number 5,339,641
    • Issue date Aug 23, 1994
    • Praxair Technology, Inc.
    • Mary J. Mathis
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...