UL 745-2-3
Particular Requirements for Grinders, Polishers, and Disk-Type Sanders
standard by Underwriters Laboratories, 01/01/1995
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UL 60079-29-4
Explosive Atmospheres – Part 29-4: Gas Detectors – Performance Requirements of Open Path Detectors for Flammable Gases
standard by Underwriters Laboratories, 08/24/2018
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