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Current transformer changing method with extra transformer
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Pad mounted transfomer changing method on electric distribution lines with uninterruptible power supply attached a generator
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The working method on low voltage electric distribution lines with uninterruptible power supply attached an electric generator
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KR20090019951A
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The working method on low voltage service wire with by-pass line
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KR20090019958A
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The working method on low voltage service wire with by-pass line
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KR20080102721A
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The working method on electric distribution lines with uninterruptible power supply attached an electric generator
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The working method for uninterruptably transferring transfomers with fuel cell equipment
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Uninterruptible power supply with fuel cell
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Safety device for hinged door
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A partable and framable mini goal post for soccer
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A road-guide plate attaachable on the guard rail
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railway line plate
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