JD

John Hincks Duke

📍 Providence, RI: #4 of 59 inventorsTop 7%
🗺 Rhode Island: #17 of 240 inventorsTop 8%
Overall (1989): #24,002 of 140,708Top 20%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4884800 Rowing machine 1989-12-05
4846460 Rowing machine 1989-07-11