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RENE LE PIN
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RENE LE PIN
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Application filed by RENE LE PINfiledCriticalRENE LE PIN
Application grantedgrantedCritical
Publication of FR438687ApublicationCriticalpatent/FR438687A/fr
F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING