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Scroll compressor
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Patent number 6,106,252
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Issue date Aug 22, 2000
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Hitachi, Ltd.
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Toshio Yamanaka
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Diamond tool
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Patent number 5,022,797
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Issue date Jun 11, 1991
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Hitachi, Ltd.
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Masashi Sawa
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Precision positioning device
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Patent number 4,585,379
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Issue date Apr 29, 1986
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Hitachi, Ltd.
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Kazuhiko Nagayama
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...