ALEXANDRIA, Va., Nov. 25 -- United States Patent no. D1,103,220, issued on Nov. 25.
"Air pump" was invented by Houxi Rao (Huaian, China), Lei Chen (Huaian, China) and Jiakai Gao (Huaian, China).
The patent was filed on July 13, 2022, under Application No. D/515,047.
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