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Shanghai, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Ventilation fan with synchronous butterfly shutter for animal building
Patent number
11,690,351
Issue date
Jul 4, 2023
The GSI Group LLC
Yu Shao
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Patents Applications
last 30 patents
Information
Patent Application
VENTILATION SHUTTER WITH LOUVER HAVING SEALING LIP
Publication number
20210190343
Publication date
Jun 24, 2021
The GSI Group LLC
Yu Shao
F24 - HEATING RANGES VENTILATING
Information
Patent Application
VENTILATION FAN WITH SYNCHRONOUS BUTTERFLY SHUTTER FOR ANIMAL BUILDING
Publication number
20210144951
Publication date
May 20, 2021
THE GSI GROUP, LLC
Yu Shao
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
VENTILATION SHUTTER
Publication number
20210003314
Publication date
Jan 7, 2021
THE GSI GROUP, LLC
YU Shao
F24 - HEATING RANGES VENTILATING