Title:
COMPOSITE POLYPROPYLENE FILAMENT
United States Patent 3509013

Inventors:
Oppenlander, George C.
Publication Date:
04/28/1970
View Patent Images:
Assignee:
HERCULES INC
Primary Class:
Other Classes:
264/172.140, 428/394, 264/172.150, 264/172.180, 264/168
International Classes:
D01D5/30; D01F8/06; D02G1/00
US Patent References:
3399259Method for producing bicomponent polypropylene filaments




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