Remote indication systems

Claim 1

A REMOTE INDICATION SYSTEM, INCLUDING A CONTROL LOCATION AND AT LEAST ONE REMOTE LOCATION CONNECTED BY A COMMUNICATION CHANNEL CAPABLE OF CONDUCTING SIGNALS OF VARIOUS CHARATERISTICS, COMPRISING, A TRANSMITTING MEANS HAVING CONNECTIONS TO SAID CHANNEL FOR TRANSMITTING SIGNALS ALTERNATELY OF A FIRST AND A SECOND CHARACTERISTIC, SUCCESSIVE SIGNALS BEING SPACED BY SIMILAR PERIODS OF NO SIGNAL, A FIRST RECEIVING MEANS AT SAID CONTROL LOCATION, AND A SECOND RECEIVING MEANS AT SAID REMOTE LOCATION, EACH RECEIVING MEANS HAVING CONNECTIONS TO SAID CHANNEL AT THE CORRESPONDING LOCATION AND RESPONSIVE TO THE SUCCESSIVE SIGNALS TRANSMITTED BY SAID TRANSMITTING MEANS FOR CYCLICALLY ESTABLISHING IN SYNCHRONISM A PLURALITY OF SUCCESSIVE CONDITIONS, A PLURALITY OF TWO-POSITION INDICATORS AT SAID REMOTE LOCATION ONE CORRESPONDING TO EACH CONDITION OF THE ASSOCIATED RECEIVING MEANS, A TRANSMITTER AT SAID REMOTE LOCATION HAVING CONNECTIONS TO SAID CHANNEL FOR TRANSMITTING WHEN ACTUATED A SIGNAL OF A THIRD CHARACTERISTIC, CIRCUIT MEANS AT SAID REMOTE LOCATION CONTROLLED BY SAID SECOND RECEIVING MEANS AND BY SAID INDICATORS AND HAVING CONNECTIONS FOR ACTUATING SAID TRANSMITTR DURING EACH SUCCESSIVE CONDITION OF SAID RECEIVING MEANS WHEN THE CORRESPONDING INDICATOR OCCUPIES A PRESELECTED ONE OF ITS POSITIONS, AND A RECORDING MEANS AT SAID CONTROL LOCATION HAVING CONNECTIONS TO SAID CHANNEL AND CONTROLLED BY SAID FIRST RECEIVING MEANS AND RESPONSIVE TO SIGNALS OF SAID THIRD CHARACTERISTIC FOR INDIVIDUALLY RECORDING THE POSITIONS OF SAID INDICATORS AT THE REMOTE LOCATION IN ACCORDANCE WITH THE SIGNALS RECEIVED FROM SAID TRANSMITTER.