DK64871C - Automatisk Alarmanlæg til Udsendelse af Meldinger over Telefonnettet til en central Kommandopost eller et Overvaagningssted.
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Automatisk Alarmanlæg til Udsendelse af Meldinger over Telefonnettet til en central Kommandopost eller et Overvaagningssted.
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DK160444A1944-06-031944-06-03Automatisk Alarmanlæg til Udsendelse af Meldinger over Telefonnettet til en central Kommandopost eller et Overvaagningssted.
DK64871C
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