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Traffic control system
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Patent number 5,646,853
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Issue date Jul 8, 1997
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Hitachi, Ltd.
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Kazunori Takahashi
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G08 - SIGNALLING
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Image processing apparatus
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Patent number 5,003,616
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Issue date Mar 26, 1991
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Hitachi, Ltd.
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Miyahiko Orita
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G06 - COMPUTING CALCULATING COUNTING
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Floating point data adder
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Patent number 4,644,490
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Issue date Feb 17, 1987
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Hitachi, Ltd.
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Takao Kobayashi
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G06 - COMPUTING CALCULATING COUNTING