RS

Roger Keith Siemionko

EA E.I. Du Pont De Nemours And: 2 patents #17 of 304Top 6%
📍 Newark, DE: #2 of 45 inventorsTop 5%
🗺 Delaware: #19 of 287 inventorsTop 7%
Overall (1982): #8,230 of 81,411Top 15%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4359569 Aromatic polyester and filaments — 1982-11-16
4347349 Aromatic polyester and filaments — 1982-08-31