Donal R. Chapin

PA Parker-Hannifin: 1 patents #643 of 1,656Top 40%

📍 Powell, OH: #293 of 479 inventorsTop 65%

🗺 Ohio: #42,657 of 73,341 inventorsTop 60%

Overall (All Time): #2,662,417 of 4,157,543Top 65%

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
11365829	Flow control valve	Steven Ware, Christopher J. Webber	2022-06-21