Bunzo Hirano

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Patents Grantslast 30 patents

Information Patent Grant
Natural convection type heating furnace
- Patent number 6,503,078
- Issue date Jan 7, 2003
- Bunzo Hirano
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Heating furnaces
- Patent number 4,964,799
- Issue date Oct 23, 1990
- Bunzo Hirano
- F27 - FURNACES KILNS OVENS RETORTS