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UMBRA PRODOTTI CHIMICI SOC
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UMBRA PRODOTTI CHIMICI SOC
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Application filed by UMBRA PRODOTTI CHIMICI SOCfiledCriticalUMBRA PRODOTTI CHIMICI SOC
Application grantedgrantedCritical
Publication of FR848766ApublicationCriticalpatent/FR848766A/fr
Procédé pour réaliser une jonction durable, conductrice de l'électricité, de conducteurs poreux, en particulier en charbon, soit entre eux, soit avec des conducteurs métalliques