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Ludwig Richter

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  • Heusenstamm, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Telephone instrument
    • Patent number 4,790,007
    • Issue date Dec 6, 1988
    • Telenorma Telefonbau und Normalzeit GmbH
    • Ludwig Richter
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone set
    • Patent number D297137
    • Issue date Aug 9, 1988
    • Ludwig Richter
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Telephone set
    • Patent number D294351
    • Issue date Feb 23, 1988
    • Ludwig Richter
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Telephone set
    • Patent number D294248
    • Issue date Feb 16, 1988
    • Ludwig Richter
    • D14 - Recording, communication, or information retrieval equipment