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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH02111108
Kind Code:
U
Application Number:
JP1995189U
Publication Date:
September 05, 1990
Filing Date:
February 21, 1989
Export Citation:
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International Classes:
G02B6/36; (IPC1-7): G02B6/36
Domestic Patent References:
JPS5683711A1981-07-08
JPS5767906A1982-04-24
JP55065605B
JP61157908B



 
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