TREA

Harold J. Lonn

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  • Lombard, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ball valve assembly
    • Patent number 3,970,285
    • Issue date Jul 20, 1976
    • Henry Valve Company
    • Harold J. Lonn
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...