ALEXANDRIA, Va., Aug. 26 -- United States Patent no. D1,090,839, issued on Aug. 26, was assigned to SMTP MEDICAL Co. LTD. (Beijing).
"Part of ultrasonic knife for surgery" was invented by Qun Cao (Beijing), Songtao Zhan (Beijing) and Yingfei Fang (Beijing).
The patent was filed on May 10, 2023, under Application No. D/517,488.
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