Who makes robot vacuums?

2 brands make robot vacuums. Their US trademarks are held mostly by companies based in China (1), United States (1).

Brand	Official website	US trademark held by
Ecovacs	ecovacs.com	ECOVACS ROBOTICS CO., LTD. (China)
Roborock	us.roborock.com	Roborock Technology Co. (United States)

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