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Ernesto Lehmann

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  • Schaffhausen, CH
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pipe-drilling fitting
    • Patent number 6,260,573
    • Issue date Jul 17, 2001
    • Georg Fischer Wavin AG
    • Ernesto Lehmann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fitting of weldable thermoplastic material
    • Patent number 4,869,533
    • Issue date Sep 26, 1989
    • Georg Fischer A.G.
    • Ernesto Lehmann
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Process for heat-sealing thermoplastic conduits
    • Patent number 4,670,078
    • Issue date Jun 2, 1987
    • Georg Fischer Aktiengesellschaft
    • Alfred Thalmann
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method and apparatus for welding conduits
    • Patent number 4,642,154
    • Issue date Feb 10, 1987
    • Georg Fischer Aktiengesellschaft
    • Alfred Thalmann
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Apparatus for the heat-sealing thermoplastic conduits with a bridgi...
    • Patent number 4,618,168
    • Issue date Oct 21, 1986
    • Georg Fischer Aktiengesellschaft
    • Alfred Thalmann
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Tube coupling assembly
    • Patent number 4,326,737
    • Issue date Apr 27, 1982
    • Georg Fischer Aktiengesellschaft
    • Ernesto Lehmann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Threaded pipe coupling for smooth plastic joints
    • Patent number 4,043,576
    • Issue date Aug 23, 1977
    • Georg Fischer Aktiengesellschaft
    • Fritz Reich
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Apparatus for forming a continuous wire into a mat
    • Patent number 4,019,544
    • Issue date Apr 26, 1977
    • Georg Fischer Aktiengesellschaft
    • Hans Jaggi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...