SG10201913390XA
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Device for releasing and resetting a fire and smoke barrier
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Control system for fire door and a door operator having the same
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Door operator with high-speed operation and fire escape functions
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Door curtain anti-dropping device having latching pin locking mechanism
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Door curtain anti-dropping device having latching pin locking mechanism
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Device and method for controlling speed of rolling door
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Door operator having lock mechanism
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Machine mechanism of a rolling door operator
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Door machine having chain disk locking mechanism
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Integrated brake and chain disk assembly for door operator
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Active brake release device driven by a second motor and attached to the exterior of a door controller
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Active brake release device attached to the exterior of a door controller
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Engaging/disengaging fail-safe door closing device for rolling fire door and door machine having same
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Control system for door opener
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