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UL 863 Ed. 8-2007 (2009)
Standard for Time-Indicating and -Recording Appliances - Published Date: November 3, 2009
These revisions to UL 863 are being issued to address universal upkeep of UL Standards for Safety. These revisions are considered to be non-substantive and not subject to UL s STP process.
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Underwriters Laboratories [ul]