ALEXANDRIA, Va., July 15 -- United States Patent no. D1,131,388, issued on June 23, was assigned to NINGBO SUNFREE MOTOR TECHNOLOGY COMPANY Ltd. (Ningbo City, China).
"Motor for curtain" was invented by Yongqiang Zhou (Ningbo City, China).
The patent was filed on April 18, 2025, under Application No. D/000,122.
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