Lifeng Chao

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Cheshire, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Elevator safety actuator systems
- Patent number 11,104,545
- Issue date Aug 31, 2021
- Otis Elevator Company
- Lifeng Chao
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
ELEVATOR SAFETY ACTUATOR SYSTEMS
- Publication number 20200180908
- Publication date Jun 11, 2020
- Otis Elevator Company
- Lifeng Chao
- B66 - HOISTING LIFTING HAULING