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US 2929804

How Spandex Elastic Fibers Are Chemically Engineered

DuPont's 1960 patent for a stretchy, durable synthetic fiber made from segmented polymers, which became the foundation for modern Spandex.

Statusexpired

Granted1960

Expires1975

Claims2

Forward citations71

Prior art5

AssigneeEI Du Pont de Nemours and Co

InventorsSteuber Walter

Patent B

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