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US07670012B2 Projection system and methods 失效
投影系统和方法

Projection system and methods
Abstract:
A projection system has a housing and a projector removably, pivotally attached to the housing. The projector can pivot relative to the housing between a first position, where a light outlet of the projector is covered by the housing, and a second position, where the light outlet of the projector is exposed.
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