TREA

Ivan Hellquist

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  • Sollentuna, SE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Breathing apparatus
    • Patent number 5,813,400
    • Issue date Sep 29, 1998
    • Comasec International S.A.
    • Pierre Buhlmann
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Locking device for attaching a gas cylinder in a portable cylinder...
    • Patent number 5,080,414
    • Issue date Jan 14, 1992
    • Interspiro AB
    • Ivan Hellquist
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    Respirator
    • Patent number 4,926,855
    • Issue date May 22, 1990
    • Interspiro AB
    • Ivan Hellquist
    • A62 - LIFE-SAVING FIRE-FIGHTING
  • Information Patent Grant

    Regulator
    • Patent number 4,887,638
    • Issue date Dec 19, 1989
    • Interspiro AB
    • Ivan Hellquist
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Warning arrangement for breathing apparatus for divers
    • Patent number 4,141,353
    • Issue date Feb 27, 1979
    • AGA Aktiebolag
    • Gunnar Dahlback
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT