Document Type and Number:
Japanese Patent JPH0493805
Kind Code:
U
Application Number:
JP40515690U
Publication Date:
August 14, 1992
Filing Date:
December 27, 1990
Export Citation:
International Classes:
G02B6/38; (IPC1-7): G02B6/38
Domestic Patent References:
JP58109713B |
Next Patent: JPS493806