TREA

Johann Spies

Follow

Person

  • Stuhr, DE
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Rocket drive with air intake
    • Patent number 4,771,601
    • Issue date Sep 20, 1988
    • Erno Raumfahrttechnik GmbH
    • Johann Spies
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Solar energy collector panel
    • Patent number 4,332,241
    • Issue date Jun 1, 1982
    • Erno Raumfahrttechnik GmbH
    • Rolf Dalstein
    • F24 - HEATING RANGES VENTILATING