RE

Ralph W. Engstrom

RC Rca: 1 patents #895 of 1,739Top 55%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #4,109,292 of 4,157,543Top 100%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4196257 Bi-alkali telluride photocathode Arthur F. McDonie 1980-04-01