RP

Richard R. Pettijohn

SI Sri International: 1 patents #681 of 1,272Top 55%
📍 Portola Valley, CA: #456 of 621 inventorsTop 75%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #4,100,259 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4299904 Photographic image enhancement method employing photoluminescence Charles S. Leung, Ronald G. Manning, Zoila Reyes, Malcolm Thackray 1981-11-10