JH

John F. Hopkins

HY Hydril: 1 patents #73 of 135Top 55%
📍 Westminster, CO: #591 of 944 inventorsTop 65%
🗺 Colorado: #24,093 of 40,980 inventorsTop 60%
Overall (All Time): #3,996,570 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4592558 Spring ring and hat ring seal — 1986-06-03