Inventor
CHO SUNG CHEUL
KR4 patents
Patents
4 patentsUS12025346B2Jul 2, 2024
Smoke tube boiler
KYUNGDONG NAVIEN CO LTD0 citations49
US12130052B2Oct 29, 2024
Heat exchanger unit and method for manufacturing the same
KYUNGDONG NAVIEN CO LTD0 citations47
US11691900B2Jul 4, 2023
Trap apparatus of condensate water
KYUNGDONG NAVIEN CO LTD0 citations47
US11236929B2Feb 1, 2022
Exhaust duct detachable from outlet, water-heating device having the exhaust duct, and method for repairing the water-heating device
KYUNGDONG NAVIEN CO LTD0 citations47