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Changfeng Zeng — 2 Patents in 2021

Overall (2021): #171,220 of 548,734Top 35%

2 Patents 2021

Issued Patents 2021

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
D935670	Suspension boom stand	—	2021-11-09
D917200	Door hanging organizer	—	2021-04-27