Surface cleaning apparatus | Patent Number 10820769
US 10820769 B2Filled DateJul 25, 2018
Priority DateOct 28, 2015
Publication DateNov 15, 2018
Expiration DateOct 27, 2035
Inventor/ApplicantsKam Hoi Ma
Xin Chen
Jincheng Xia
Jianjun Ge
Zhenjiang Yin
Yongsheng Liang
Xin Chen
Jincheng Xia
Jianjun Ge
Zhenjiang Yin
Yongsheng Liang
ExaminesNGUYEN, DUNG V
Art Unit3723
Technology Center3700
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