RB

Richard J. Byer

EA E.I. Du Pont De Nemours And: 2 patents #2,942 of 8,010Top 40%
🗺 New York: #48,759 of 115,490 inventorsTop 45%
Overall (All Time): #2,361,071 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4378427 Method for producing a long scale direct-positive photographic emulsion — 1983-03-29
4370411 Method for producing a long scale direct-positive photographic emulsion — 1983-01-25