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Projector engine and projector using the same
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Dust preventing assembly and projecting apparatus adopting same
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Cooling system and projecting apparatus adopting same
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Safe-guarding column assembly and projecting machine adopting same
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Image synthesizing component and liquid crystal projecting device
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Light source lamp cooling mechanism and projection type image display apparatus using the same
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Projection machine and network card cooling method thereof
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Optical part cooling mechanism and projection type image display apparatus using the same
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Cooling air duct of prism optical part and projection machine
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Air discharge mechanism and projection type image display apparatus using the same
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Power source unit and projection type image display apparatus using the same
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Projection device
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Projection device
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Projection device and light bulb fixing mechanism
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