ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,023, issued on Dec. 23, was assigned to SHENZHEN SHIWU TECHNOLOGY Co. LTD. (Shenzhen, China).
"Neck fan" was invented by Haibo Dong (Shenzhen, China), Xiangyu Yang (Shenzhen, China) and Hui Liu (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A neck fan configured to be worn around a neck of a user is provided and includes a fan body. A fan assembly is arranged inside the fan body. The fan assembly comprises a fan, and the fan comprises a first blade set, a second blade set, a hub, and a connection board; the connection board is arranged to surround a circumference of the hub. The first blade set is arranged on a first side of the con...