DS

Dale W. Sullivan

CE Certainteed: 1 patents #267 of 431Top 65%
Overall (All Time): #4,024,098 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4550778 Well screen Kermit W. Janssen, Andrew Mitchell 1985-11-05