TREA

Alfred Zielke

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  • Peine-Vohrum, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Keyboard construction
    • Patent number 4,210,787
    • Issue date Jul 1, 1980
    • Elmeg-Electro-Mechanik GmbH
    • Alfred Zielke
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Keyboard with mechanical encoding
    • Patent number 4,167,657
    • Issue date Sep 11, 1979
    • Elmeg-Elektro-Mechanik Gesellschaft mit beschrankter Haftung
    • Alfred Zielke
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Keyboard with selective key entry block
    • Patent number 4,140,883
    • Issue date Feb 20, 1979
    • Elmeg-Elecktro-Mechanik
    • Alfred Zielke
    • H01 - BASIC ELECTRIC ELEMENTS