ALEXANDRIA, Va., Sept. 10 -- United States Patent no. D1,092,689, issued on Sept. 9, was assigned to ZHEJIANG FANSHENG FLUID CONTROL Co. LTD (Yuhan, China).
"Vacuum check valve" was invented by Junhui Yuan (Yuhuan, China), Xuanhao Dai (Yuhuan, China), Ming Li (Yuhuan, China), Yinzong Zhang (Yuhuan, China) and Jinmu Zhang (Yuhuan, China).
The patent was filed on Sept. 30, 2024, under Application No. D/966,074.
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