UL 60974-1
Standard for Arc Welding Equipment; Part 1: Welding Power Sources
standard by Underwriters Laboratories, 03/17/2005
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UL 60745-2-12
Hand-Held Motor-Operated Electric Tools – Safety – Part 2-12: Particular Requirements For Concrete Vibrators
standard by Underwriters Laboratories, 03/21/2005
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