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Jun Haeng LEE
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Saitama, JP
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last 30 patents
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Patent Grant
Optical signal quality monitoring apparatus
Patent number
8,254,782
Issue date
Aug 28, 2012
KDDI Corporation
Takehiro Tsuritani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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last 30 patents
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Patent Application
OPTICAL SIGNAL QUALITY MONITORING APPARATUS
Publication number
20090148158
Publication date
Jun 11, 2009
KDDI CORPORATION
Takehiro TSURITANI
H04 - ELECTRIC COMMUNICATION TECHNIQUE