DP

David R. Pflum

WN Weyerhaeuser Nr: 1 patents #274 of 578Top 50%
📍 Grayling, MI: #9 of 21 inventorsTop 45%
🗺 Michigan: #49,615 of 86,293 inventorsTop 60%
Overall (All Time): #3,669,437 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5993534 Stain blocking treatment for wood based panels Jack G. Winterowd, Dan V. Hanson, Jerry D. Izan, Charles E. Lewis, Stephen L. Siebert +2 more 1999-11-30