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Hans-Joachim Hartwig

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  • Lubeck, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Respirator
    • Patent number 4,211,221
    • Issue date Jul 8, 1980
    • Dragerwerk Aktiengesellschaft
    • Erik Schwanbom
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Monitor device for a ventilation unit
    • Patent number 4,197,844
    • Issue date Apr 15, 1980
    • Dragerwerk Aktiengesellschaft
    • Hans-Joachim Hartwig
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE