ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,771, issued on Dec. 23, was assigned to Beijing Roborock Technology Co. Ltd. (Beijing).

"Autonomous mobile device" was invented by Guang Yu (Beijing), Yongji Long (Beijing), Dayong Sun (Beijing) and Zheng Wang (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides an autonomous mobile device. The autonomous mobile device includes a device main body, provided with a buffer component on a front side of the device main body; a line laser module, arranged on at least one of the device main body and the buffer component and located between the buffer component and the device main body, wherein the line laser module includ...