Modified cross section yarn
United States Patent 3216186

Inventors:
Opfell, James E.
Publication Date:
11/09/1965
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Assignee:
Allied, Chem
Primary Class:
Other Classes:
57/248, 264/DIG.026, 264/211.140, 428/401, 57/246, 428/397, 264/168, 428/369
International Classes:
D01D5/253; D01D5/00
US Patent References:
3084993Production of crimped filaments
Foreign References:
GB731930A
GB816877A