Door for architecture with non-face-to-face outdoor observation means
Disclosed is a building door having a non-face-to-face outdoor observation means, which comprises: a door body selectively connecting an inner portion to an outer portion of a building, and having an opaque material; an opening area disposed at one side of the door body, and opened to enable the inn...
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Format: | Patent |
Sprache: | eng ; kor |
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