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	Patent number : 10-0566526 Registration Institution : KIPO(Korean Intellectual Property Office) Title of The Invention : Transformer inverter Patentee : Kyung In Electronics Co., Ltd Inventor : Dong-Heung, Lee Application Number : 2003-0055394 Filing date : August 11th, 2003 Term of Registration date : March 24th, 2006

	Registration number : 0404669 Registration Institution : KIPO(Korean Intellectual Property Office) Title of The Device : Impedance matching of xDSL splitter Owner of The Utility Model Right : Kyung In Electronics Co., Ltd Deviser : Dong-Heung, Lee Registration date : March 24th, 2006

	Registration number : 0331060 Registration Institution : KIPO(Korean Intellectual Property Office) Title of The Device : Structure of inductor Owner of The Utility Model Right : Kyung In Electronics Co., Ltd Deviser : Dong-Heung, Lee Registration date : December 13th, 2003

	Registration number : 0331061 Registration Institution : KIPO(Korean Intellectual Property Office) Title of The Device : Transformer for inverter Owner of The Utility Model Right : Kyung In Electronics Co., Ltd Deviser : Dong-Heung, Lee Registration date : December 13th, 2003

	Registration number : 0353527 Registration Institution : KIPO(Korean Intellectual Property Office) Title of The Device : Bobbin for inverter transformer Owner of The Utility Model Right : Kyung In Electronics Co., Ltd Deviser : Dong-Heung, Lee Registration date : June 04th, 2004

	Registration number : 0374806 Registration Institution : KIPO(Korean Intellectual Property Office) Title of The Device : xDSL jack splitter to use terminal block Owner of The Utility Model Right : Kyung In Electronics Co., Ltd Deviser : Dong-Heung, Lee Registration date : January 25th, 2005