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Process and apparatus for the continuous checking of the supermelting of the solidification front of a monocrystal during formation and application to the checking of the growth of a crystal
Process and apparatus for the continuous checking of the supermelting of the solidification front of a monocrystal during formation and application to the checking of the growth of a crystal
Rundspruchschaltung fuer Telegraphierzwecke nach Art der Konferenzschaltung, bei der die Teilnehmerleitungen parallel an nur einem Relaiskontakt liegen
Schaltungsanordnung zum Umlegen von Verbindungen in Fernsprechvermittlungen mit mehreren Vermittlungsplaetzen, insbesondere in Fernaemtern mit selbsttaetiger Anrufverteilung