TREA

Horst R. A. Ziegler

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  • Tyreso, SE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of manufacturing a push button keyboard
    • Patent number 4,459,256
    • Issue date Jul 10, 1984
    • Telefonaktiebolaget LM Ericsson
    • Horst R. A. Ziegler
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL