YY, MM, DD Patent name condition (pending, registered, patented) a boiler 1999. 10 15 Certificate of utility model right number 0165254 registered The Korean Intellectual Property Office 1999. 10 15 Certificate of utility model right number 0165255 registered The Korean Intellectual Property Office 1999. 10 15 Certificate of utility model right number 0165256 registered The Korean Intellectual Property Office 1999. 12. 21 Certificate of utility model right number 0173646 registered The Korean Intellectual Property Office 2000. 08. 25 Patent number 0272448 registered The Korean Intellectual Property Office 2000. 08. 25 Patent number 0272449 registered The Korean Intellectual Property Office 2000. 10. 09 Certificate of utility model right number 0207428 registered The Korean Intellectual Property Office 2000. 10. 16 Certificate of utility model right number 0208392 registered The Korean Intellectual Property Office 2001. 06. 29 Certificate of utility model right number 0237921 registered The Korean Intellectual Property Office 2002. 02. 28 Certificate of utility model right number 0267764 registered The Korean Intellectual Property Office 2002. 10. 23 Certificate of utility model right number 0294178 registered The Korean Intellectual Property Office 2002. 11. 29 Certificate of utility model right number 0297774 registered The Korean Intellectual Property Office 2004. 10. 26 Certificate of utility model right number 0366791 registered The Korean Intellectual Property Office 2004. 11. 16 Certificate of utility model right number 0368711 registered The Korean Intellectual Property Office 2004. 11. 16 Certificate of utility model right number 0368721 registered The Korean Intellectual Property Office 2004. 11. 30 ISO 9001:2000 / KS A9001:2001 patented DAS 2005. 02. 02 Certificate of utility model right number 0375810 registered The Korean Intellectual Property Office 2005. 02. 02 Certificate of utility model right number 0375811 registered The Korean Intellectual Property Office 2005. 10. 21 CE patented TOV

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