Fireproof shutter typed stacking
The present invention relates to a stacking type fire prevention shutter, which is characterized by comprising: an installation frame (10) at which a rotation drum or sprocket (11) is installed; a stacking shutter (20) which comprises a wire or chain (30) which is latched to be towed by the rotating...
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Format: | Patent |
Sprache: | eng ; kor |
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