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SiSi Zheng

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  • Hangzhou, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Elevator car
    • Patent number D846149
    • Issue date Apr 16, 2019
    • Otis Elevator Company
    • Sisi Zheng
    • D25 - Building units and construction elements
  • Information Patent Grant

    Elevator car
    • Patent number D846150
    • Issue date Apr 16, 2019
    • Otis Elevator Company
    • Wei Li
    • D25 - Building units and construction elements
  • Information Patent Grant

    Elevator car
    • Patent number D846148
    • Issue date Apr 16, 2019
    • Otis Elevator Company
    • Zhe Li
    • D25 - Building units and construction elements
  • Information Patent Grant

    Elevator car
    • Patent number D844839
    • Issue date Apr 2, 2019
    • Otis Elevator Company
    • Wei Li
    • D25 - Building units and construction elements
  • Information Patent Grant

    Lighting fixture
    • Patent number D843633
    • Issue date Mar 19, 2019
    • Otis Elevator Company
    • SiSi Zheng
    • D26 - Lighting

Patents Applicationslast 30 patents