ALEXANDRIA, Va., Aug. 25 -- United States Patent no. D1,143,621, issued on Aug. 25, was assigned to NINGBO LIYANG NEW MATERIAL COMPANY Ltd. (Ningbo, China).
"Curtain" was invented by Baoguo Tan (Ningbo, China).
The patent was filed on Sept. 17, 2025, under Application No. D/023,540.
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