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Hans Schmidt
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4264. Schmidt, H. Feb. 20. Gas burners.-A burner for heating a spiral coil m through which air or water is passed consists of a distributing-pipe f, from which project the burner tubes h, having perforations i corresponding with the coil turns.
GB190704264D1907-02-201907-02-20Apparatus for the Supply of Hot Water and Hot Air
ExpiredGB190704264A
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