Modified cross section yarn
United States Patent 3216186
Inventors:
Opfell, James E.
Publication Date:
11/09/1965
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:
| 3084993 | Production of crimped filaments | | | |