ALEXANDRIA, Va., June 16 -- United States Patent no. D1,075,423, issued on May 20.
"Vacuum grain storage barrel" was invented by Youming Yang (Dongguan, China), Kehua Wu (Dongguan, China) and Wukun Wang (Dongguan, China).
The patent was filed on Jan. 6, 2023, under Application No. D/869,659.
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