Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
G04C21/00—Producing acoustic time signals by electrical means
G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
G04C21/30—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school
G04C21/32—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school giving indications at a number of places each at a different time, e.g. system of alarms in a hotel
G04C21/326—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school giving indications at a number of places each at a different time, e.g. system of alarms in a hotel adjustable from the different places themselves
Einrichtung zur elektrischen Zeichenuebertragung, insbesondere zur UEbertragung von Boersenkursen nach einer oder mehreren Empfangsstationen mittels Stromstoessen oder Stromaenderungen, welche in an und fuer sich bekannter Art von einer oder mehreren Zentralstellen abgegeben werden
Einrichtung zur Summierung von durch ein Impulsverfahren zeitlich nacheinander fernuebertragenen Messgroessen, insbesondere zur Messung der Gesamtleistung bei Lieferung und Bezug von elektrischer Energie