ALEXANDRIA, Va., Feb. 17 -- United States Patent no. D1,113,533, issued on Feb. 17, was assigned to AMBIT MICROSYSTEMS (SHANGHAI) LTD. (Shanghai).
"Doorbell" was invented by Ya-Ru Li (Shenzhen, China) and Wei-Min Chang (New Taipei, Taiwan).
The patent was filed on Jan. 5, 2024, under Application No. D/907,282.
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