TREA

Krister Kallstrom

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  • Stockholm, SE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fire resistant wall element
    • Patent number 4,814,217
    • Issue date Mar 21, 1989
    • Hadak Security AB
    • Krister Kallstrom
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Fire resistant wall construction
    • Patent number 4,723,385
    • Issue date Feb 9, 1988
    • Hadak Security AB
    • Krister Kallstrom
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES