Effort-saving flap-type drain valve | Patent Number 11898337

US 11898337 B2
Application Number17799066
Publication NumberUS 20230089999 A1
Pendency3 years, 7 months, 1 day
Filled DateJul 17, 2020
Priority DateJul 17, 2020
Publication DateMar 23, 2023
Expiration DateJul 16, 2040
Inventor/ApplicantsXingdong Wang
Rongyu Zhang
Xingdong WANG
Shunxing ZHOU
Rongyu ZHANG
Ruiliang CHEN
Ruiliang Chen
Shunxing Zhou
ExaminesSKUBINNA, CHRISTINE J
Art Unit3754
Technology Center3700
Assignments
Xiamen R&t Plumbing Technology Co. Ltd.
Current
Xiamen R&t Plumbing Technology Co. Ltd.
Original
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