TREA

Marvin G. Combes

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  • Castro Valley, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    One piece seat ring with O-ring seal
    • Patent number 4,192,483
    • Issue date Mar 11, 1980
    • Grove Valve and Regulator Company
    • Marvin G. Combes
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Apparatus and method for forming cylindrical valve hubs
    • Patent number 4,083,219
    • Issue date Apr 11, 1978
    • Grove Valve and Regulator Company
    • Marvin G. Combes
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Cylindrical gate valve body
    • Patent number 4,077,604
    • Issue date Mar 7, 1978
    • Grove Valve and Regulator Company
    • Marvin G. Combes
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...