Ziwen Fu

3 Patents

• US118084532023

  Gas Mixing Device and Gas Water Heating Device

  A.O. Smith Corporation

  0 cites
• US117616772023

  Water Heater Having Highly Efficient and Compact Heat Exchanger

  A. O. Smith Corporation

  0 cites
• US115855732023

  Gas Mixing Device and Gas Water Heating Device

  A. O. Smith Corporation

  0 cites