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Title of invention: “Closed circulatory hot & cold water supply system”
Patent No.: 10-0754490
Registration Date: August 27, 2007
Title of invention: “Continuously running super market refrigerator”
Patent No.: 10-0560561
Registration Date: March 7, 2006
Title of invention: “Control device and method for refrigerator”
Patent No.: 0459091
Registration Date: November 19, 2004
Title of invention: “Temperature control method and device for super market refrigerator through a c
Patent No.: 0392304
Registration Date: July 9, 2003
Title of invention: “Harmonic mitigation filter device”
Patent No.: 10-033747
Registration Date: May 8, 2002
Title of invention: “High voltage power supply combined with capacitor & inductor(reactor)”
Patent No.: 10-0315444
Registration Date: November 9, 2001
Title of invention: “Motor speed controller”
Patent No.: 10-0304790
Registration Date: July 24, 2001
Title of invention: “Voltage sourced VFD’s switching circuit and control methods”
Patent No.: 10-0216868
Registration Date: June 2, 1999
Title of invention: “PWM type current controller ”
Patent No.: 10-0174490
Registration Date: November 4, 1998
Title of invention: “Soft charging device for smoothing circuit of AC power supply”
Patent No.: 10-0149968
Registration Date: June 10, 1998
Title of invention: “Inverter snubber circuit using high frequency DC/DC converter”
Patent No.: 10-0132187
Registration Date: December 8, 1997
Title of invention: “DC voltage measuring circuit through phototransistor combination”
Patent No.: 10-00111436
Registration Date: January 28, 1997
Trade Mark: SINEMODE
Registration No.: 40-0944595
Registration Date: December 13, 2013
Trade Mark: 싸인모드
Registration No.: 40-0944594
Registration Date: December 13, 2013
Trade Mark: Dynamic APFR
Registration No.: 40-0764365
Registration Date: October 9, 2008
Trade Mark: VAR Manager
Registration No.: 40-0764366
Registration Date: October 9, 2008
KS Q ISO 9001:2009/ISO 9001:2008
Design, Development, Manufacturing and Optional services for electricity control devices such as Inverter Panel, CCS, and etc.
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