Zhihao Zhou

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Qinhuangdao, CN

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Patents Grantslast 30 patents

Information Patent Grant
Status detection of alarm sounding parts
- Patent number 11,287,462
- Issue date Mar 29, 2022
- Carrier Corporation
- Zhijun Li
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
BUZZER, BUZZER DEVICE AND SECURITY EQUIPMENT
- Publication number 20210304721
- Publication date Sep 30, 2021
- GULF SECURITY TECHNOLOGY COMPANY LIMITED
- Peng Liu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
STATUS DETECTION OF ALARM SOUNDING PARTS
- Publication number 20210018551
- Publication date Jan 21, 2021
- Carrier Corporation
- Zhijun Li
- G10 - MUSICAL INSTRUMENTS ACOUSTICS