Eilif Risberg

Person

  • Osteras, NO

Patents Grantslast 30 patents

  • Information Patent Grant

    Electrical resistance heating element

    • Patent number 4,501,956
    • Issue date Feb 26, 1985
    • International Standard Electric Corporation
    • Hans A. Bergersen
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL