Document Type and Number:
Japanese Patent JPS5520315
Kind Code:
Y2
Application Number:
JP15365677U
Publication Date:
May 15, 1980
Filing Date:
November 15, 1977
Export Citation:
International Classes:
D06F71/00; D06F71/04; D06F71/16; D06F71/34; (IPC1-7): D06F71/16