Document Type and Number:
Japanese Patent JPS62189691
Kind Code:
U
Application Number:
JP7768786U
Publication Date:
December 02, 1987
Filing Date:
May 23, 1986
Export Citation:
International Classes:
G04C3/00; G04C3/14; G04C21/16; G04C21/34; (IPC1-7): G04C3/00; G04C3/14; G04C21/16