ALEXANDRIA, Va., July 28 -- United States Patent no. D1,137,583, issued on July 28, was assigned to Hangzhou Green Fire Outdoor Products Co. LTD. (Hangzhou, China).
"Furnace" was invented by Guolin Shan (Hangzhou, China).
The patent was filed on March 28, 2025, under Application No. D/995,773.
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