Document Type and Number:
Japanese Patent JPS6429601
Kind Code:
U
Application Number:
JP12318987U
Publication Date:
February 22, 1989
Filing Date:
August 13, 1987
Export Citation:
International Classes:
G02B3/00; G02B3/08; G02B6/32; G02B6/42; (IPC1-7): G02B3/08; G02B3/00; G02B6/32; G02B6/42
Domestic Patent References:
| JP61106901B | ||||
| JPS62212608A | 1987-09-18 | |||
| JPH01145624A | 1989-06-07 |