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Zelin Zhang

PD Protostar, Inc., A Delaware: 2 patents #3 of 7Top 45%
Overall (2019): #100,959 of 560,194Top 20%
2
Patents 2019

Issued Patents 2019

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10434031 Wheeled walker with a moveable seat Yichuan Pan, Peter James Fellingham, Craig Timothy Shugert, David Petersen 2019-10-08
10307321 Wheeled walker with a movable seat Yichuan Pan, Peter James Fellingham, Craig Timothy Shugert, David Petersen 2019-06-04