Assignee
CHA KYU-SEOK
KR·3 granted patents·5 citations·filing 2008–2010
Top patents by PatentIndex Score
3 records- 0168US8522587B2Joint jig of spiral duct manufacturing apparatusCHA KYU-SEOK·Filed 2008·Granted Sep 3, 2013·3 cites·6 claims
- 0256US8959976B2Apparatus for manufacturing a metal plate for a duct, including mesh-type beadsCHA KYU-SEOK·Filed 2010·Granted Feb 24, 2015·2 cites·8 claims
- 0340US8915109B2Manufacturing apparatus and method of spiral duct including elbowCHA KYU-SEOK·Filed 2008·Granted Dec 23, 2014·0 cites·18 claims
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