TREA

Kaarlo Korhonen

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  • Kouvola, FI
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ventilation apparatus
    • Patent number 5,322,470
    • Issue date Jun 21, 1994
    • Jeven Oy
    • Seppo Vartiainen
    • B08 - CLEANING
  • Information Patent Grant

    Air exhausting means
    • Patent number 4,811,724
    • Issue date Mar 14, 1989
    • Halton Oy
    • Erkki Aalto
    • F24 - HEATING RANGES VENTILATING