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F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
F23N1/087—Regulating fuel supply conjointly with another medium, e.g. boiler water using mechanical means
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FR537150D1921-06-021921-06-02Valve distributrice à membrane pour distribution d'eau chaude sous pression et autres applications analogues
ExpiredFR537150A
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