INSTITUTUL DE CERCETARE îN CONSTRUCTII SI ECONOMIA CONSTRUCTIILOR
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Priority to RO94308ApriorityCriticalpatent/RO75202B1/ro
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Publication of RO75202B1publicationCriticalpatent/RO75202B1/ro
Vorzugsweise aus Siliciumkarbid bestehendes dreischenkliges, in Stern geschaltetes Heizelement fuer elektrische, mit Drehstrom betriebene Widerstandsoefen