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Donald L. Richards

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  • Durham, NC, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Single seal fluid control valve
    • Patent number 5,172,720
    • Issue date Dec 22, 1992
    • Eaton Corporation
    • Donald L. Richards
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Circuit mounting apparatus
    • Patent number 4,507,956
    • Issue date Apr 2, 1985
    • Eaton Corporation
    • Lawrence Schlesinger
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Relief valve
    • Patent number 4,246,930
    • Issue date Jan 27, 1981
    • Eaton Corporation
    • William V. Bishop
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Relief valve
    • Patent number 4,226,261
    • Issue date Oct 7, 1980
    • Eaton Corporation
    • Charles E. Ekeleme
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Compression fitting
    • Patent number 4,194,770
    • Issue date Mar 25, 1980
    • Eaton Corporation
    • Donald L. Richards
    • B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
  • Information Patent Grant

    Safety relief valve
    • Patent number 4,103,704
    • Issue date Aug 1, 1978
    • Eaton Corporation
    • Donald L. Richards
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...