Document Type and Number:
Japanese Patent JPH0442626
Kind Code:
U
Application Number:
JP8367090U
Publication Date:
April 10, 1992
Filing Date:
August 07, 1990
Export Citation:
International Classes:
G02C3/02; (IPC1-7): G02C3/02
Domestic Patent References:
JP62146120B | ||||
JP61193427B | ||||
JP56055814B |
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