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Optical isolator
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Patent number 5,574,595
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Issue date Nov 12, 1996
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Matsushita Electric Industrial Co., Ltd.
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Noboru Kurata
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G02 - OPTICS
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Optical passive components
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Patent number 5,499,132
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Issue date Mar 12, 1996
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Matsushita Electric Industrial Co., Ltd.
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Masaaki Tojo
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G02 - OPTICS
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Optical passive components
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Patent number 5,355,249
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Issue date Oct 11, 1994
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Matsushita Electric Industrial Co., Ltd.
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Hironori Souda
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G02 - OPTICS
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Microwave heating apparatus
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Patent number 4,121,078
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Issue date Oct 17, 1978
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Matsushita Electric Industrial Co., Ltd.
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Teruhisa Takano
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR