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Robert Geffroy

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  • 92200 Neuilly s/Seine, Paris, FR
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Patents Grantslast 30 patents

  • Information Patent Grant

    Piston and multilayer piston ring set
    • Patent number 4,986,168
    • Issue date Jan 22, 1991
    • Robert Geffroy
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piston scraper ring
    • Patent number 4,741,543
    • Issue date May 3, 1988
    • Robert Geffroy
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piston and piston rings set
    • Patent number RE32395
    • Issue date Apr 14, 1987
    • Robert Geffroy
    • 092 - Expansible chamber devices
  • Information Patent Grant

    Piston and piston rings set
    • Patent number 4,516,481
    • Issue date May 14, 1985
    • Robert Geffroy
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...