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2000.05 Applied for patent on chair armrest (2000-0013900)
2001.02 Joined the Korea international Trade Association (14093306)
2001.06 Applied for patent on back pad supporting device (2001-0017951)
2002.05 Registered new chair armrest design (2002-0012743)
2002.05 Registered new chair armrest design (2002-0013126)
2002.07 Registered as medical appliance manufacturer (No.1390)
2002.11 Registered new chair back pad design (2003-0032562)
2004.05 Registered new chair back pad design (2004-0015105)
2004.05 Applied for patent on chair with combined back pad and headrest (2004-0014579)
2004.07 Applied for patent on chair with side wings that provide automatic
Massage and emits anion (2004-0021504)
2004.12 Applied for patent on chair back pad (2004-0035531)
2005.05 Registered items of manufactured medical appliances (05-464)
Electrical appliance safety certificate (HD0740-500A)
Medical appliance technical document review (No.2005-0270)
Subscribed to products liability insurance (total value worth 20 million won)
2005.07 Registered new chair back pad design (2005-0024917)
2006.07 Applied for patent on chair with tilted mortar (2006- 0019170)
2007.12 Registered the chair cushion & seat and lumbar support design (30-0474178~180)
2008.11 Registered DSP trademark and service mark (40-0769151, 41-0177464)
2008.12 Registered Armrest for Chair and the design (30-0512482, 30-0502795, 30-0502794, 30-0515748)
Patent on Office chair (10-0876598)
2009.03 Registered new chair design (30-0523943)
2010.06 Patent on a new device of Back seat structure for chair (20-0450528)
2010.08 Patent on a new device of Waist supporting unit of chair (20-0449818)
   
 
2002.06 Registered new chair back pad design (2002-0016707)