TREA

Rolf Johnsson

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  • S-427 37 Angered, SE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Filtering device for vehicle exhaust
    • Patent number 4,706,455
    • Issue date Nov 17, 1987
    • Rolf Johnsson
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES