Document Type and Number:
Japanese Patent JPH0329917
Kind Code:
U
Application Number:
JP9077589U
Publication Date:
March 25, 1991
Filing Date:
July 31, 1989
Export Citation:
International Classes:
G02C3/02; G02C11/00; (IPC1-7): G02C3/02; G02C11/00
Next Patent: JPH0329918