DF

Douglas J. Frame

📍 Pontiac, MI: #131 of 283 inventorsTop 50%
🗺 Michigan: #49,615 of 86,293 inventorsTop 60%
Overall (All Time): #4,072,579 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4338963 High temperature gate valve with fused silica blade — 1982-07-13