ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,177, issued on July 21, was assigned to SHENZHEN SHIWU TECHNOLOGY Co. LTD. (Shenzhen, China).
"Fan blade and 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: "Provided are a fan blade and a neck fan. The fan blade comprises a base, a plurality of outer blades, and a plurality of inner blades. The base is generally circular and protrudes in the middle, including an annular outer disc, a connecting cylinder, and a circular inner disc. The outer disc is annularly arranged on the outside of the bottom end of the connecting cylinder, and the i...