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FRIEDMANN ALEX FA
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FRIEDMANN ALEX FA
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Application filed by FRIEDMANN ALEX FAfiledCriticalFRIEDMANN ALEX FA
Application grantedgrantedCritical
Publication of FR50235EpublicationCriticalpatent/FR50235E/fr
FR50235D1939-02-151939-02-15Dispositif de protection contre le gel des installations d'eau d'utilisation dans les voitures de chemins de fer
ExpiredFR50235E
(fr)
Dispositif pour protéger contre les dégâts les usines de force hydrauliques en cas de rupture d'éléments de l'installation servant à canaliser l'eau