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Scroll fluid apparatus
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Patent number 4,596,521
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Issue date Jun 24, 1986
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Hitachi, Ltd.
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Akira Murayama
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Scroll-type compressor
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Patent number 4,545,747
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Issue date Oct 8, 1985
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Hitachi, Ltd.
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Takahiro Tamura
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Refrigerator
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Patent number 4,261,180
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Issue date Apr 14, 1981
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Hitachi, Ltd.
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Shigekazu Nozawa
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...