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US Patent 11781567 Centrifugal fan
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Patent
Date Filed
September 22, 2022
Date of Patent
October 10, 2023
Patent Application Number
17950147
Patent Citations
US Patent 7883312 Centrifugal blower
US Patent 7887290 Blower
US Patent 7909571 Centrifugal fan and frame thereof
US Patent 8251642 Centrifugal fan
US Patent 8794915 Blower fan
US Patent 9322408 Centrifugal fan
US Patent 9568019 Fan device
US Patent 9518584 Centrifugal fan with ancillary airflow opening
US Patent 10415601 Blower noise suppressor
US Patent 7443670 Systems for improved blower fans
•••
Patent Inventor Names
Chih-Wei Chan
Ya-Ting Chang
Chin-Hung Lee
Patent Jurisdiction
United States Patent and Trademark Office
Patent Number
11781567
Patent Primary Examiner
Justin D Seabe
CPC Code
F04D 17/16
F04D 29/4226
F04D 29/4213
F04D 29/422
F04D 29/667
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