United States Patent 3289249
Inventors:
Chozo, Nakayama
Hidehiko, Kobayashi
Shigeo, Ito
Hiroshi, Yokoyama
Tooru, Hirai
Publication Date:
12/06/1966
Assignee:
ASAHI CHEMICAL IND
Other Classes:
264/172.160, 425/DIG.217, 425/463, 264/172.140, 425/131.500
International Classes:
D01D5/32; D01D5/30