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EWERS AND MIESNER HARTGUSSWERK und MASCHINENFABRIK GmbH
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EWERS AND MIESNER HARTGUSSWERK und MASCHINENFABRIK GmbH
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Priority claimed from FR958370Aexternal-prioritypatent/FR1377921A/fr
Application filed by EWERS AND MIESNER HARTGUSSWERK und MASCHINENFABRIK GmbHfiledCriticalEWERS AND MIESNER HARTGUSSWERK und MASCHINENFABRIK GmbH
Application grantedgrantedCritical
Publication of FR87755EpublicationCriticalpatent/FR87755E/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
F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
F16K17/006—Safety valves; Equalising valves, e.g. pressure relief valves specially adapted for shelters
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FR2459A1962-12-241965-01-19Soupape pour les canalisations d'admission et d'échappement de l'air dans les abris
ExpiredFR87755E
(fr)
Perfectionnements apportés aux dispositifs pour enlever les poussières qui sont contenues dans l'air circulant dans les mines et peuvent pénétrer dans les poumons