UL-1638 › Historical Revision Information
Visible Signaling Devices for Fire Alarm and Signaling Systems, Including Accessories

UL-1638 - CHANGE 10/08 - SUPERSEDED
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Visible Signaling Devices for Fire Alarm and Signaling Systems, Including Accessories


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Document Number

UL-1638

Revision Level

CHANGE 10/08

Status

Superseded

Publication Date

Oct. 10, 2008