Signalröhre	Nominativ, Singular	nominative case, singular
	Signalröhres	Genitiv, Singular	genitive case, singular
	Signalröhre	Dativ, Singular	dative case, singular
	Signalröhre	Akkusativ, Singular	accusative case, singular
	-	Nominativ, Plural
	-	Genitiv, Plural
	-	Dativ, Plural
	-	Akkusativ, Plural