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A toggle-type device for coupling the weight to a blind
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Clutch for hoist apparatus using a cycloid gear
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A shade drive apparatus
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A light condensing lens
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Light guider having multiple channels
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A photo-voltaic blind having compact fluid path for cooling
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Two-axies rotating coupling
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Appatatus for concentrating and sending sunlighting and artificial lighting of hybrid
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Double side prism solar collector and method for using that
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Prism light guide and method for using that
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