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Chi-Han Cheng

YM Yuan Mei: 2 patents #2 of 2Top 100%
📍 Zhumaoya, IL: #1 of 1 inventorsTop 100%
Overall (2024): #179,054 of 561,600Top 35%
2
Patents 2024

Issued Patents 2024

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12083547 Sprinkler 2024-09-10
11919017 Water spray gun 2024-03-05