Document Type and Number:
Japanese Patent JPH02111107
Kind Code:
U
Application Number:
JP1995089U
Publication Date:
September 05, 1990
Filing Date:
February 21, 1989
Export Citation:
International Classes:
G02B6/36; G02B6/38; (IPC1-7): G02B6/36
Domestic Patent References:
| JPS5767906A | 1982-04-24 | |||
| JPS5683711U | 1981-07-06 | |||
| JPS61157908U | 1986-09-30 |