ALEXANDRIA, Va., May 19 -- United States Patent no. D1,127,332, issued on May 19, was assigned to NINGBO EAST ENVIRONMENTAL PROTECTION MACHINERY Co. LTD. (Ningbo, China).

"Head for cleaning device" was invented by Ailiang Li (Ningbo, China) and Jianmin Wang (Ningbo, China).

The patent was filed on March 26, 2024, under Application No. D/934,534.

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