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External cavity laser
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Issue date Nov 16, 2004
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The Furukawa Electric Co., Ltd.
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H01 - BASIC ELECTRIC ELEMENTS
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Optical transmitting device
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Patent number 5,905,588
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Issue date May 18, 1999
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The Furukawa Electric Co., Ltd.
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Shin-ichi Takashima
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Optical transmission system
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Patent number 5,767,996
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Issue date Jun 16, 1998
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The Electric Co., Ltd.
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Phototransmission method
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Patent number 5,541,758
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Issue date Jul 30, 1996
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The Furukawa Electric Co., Ltd.
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Nozomu Matsuo
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H04 - ELECTRIC COMMUNICATION TECHNIQUE