PL273494A1 - Method and device for heating air and using exhaust gas heat from continuous and periodical furnace fired with fuel, especially gaseous and liquid
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Method and device for heating air and using exhaust gas heat from continuous and periodical furnace fired with fuel, especially gaseous and liquid
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PL27349488A1988-07-011988-07-01Method and device for heating air and using exhaust gas heat from continuous and periodical furnace fired with fuel, especially gaseous and liquid
PL273494A1
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