Cumulative type decoder

Claim 1

A DECODER FOR BINARY CODE GROUPS OF PULSES OF AT LEAST THREE DIGITS COMPRISING AN INPUT CIRCUIT FOR THE PULSES REPRESENTING EACH OF SAID DIGITS, A PLURALITY OF SOURCES OF EQUAL CURRENTS, AN OUTPUT CIRCUIT TO WHICH CURRENTS FROM SAID SOURCES ARE ADDITIVELY SUPPLIED, A FIRST OR GATE HAVING TWO INPUTS CONNECTED RESPECTIVELY TO RECEIVE THE PULSES REPRESENTING THE MOST AND THE NEXT MOST SIGNIFICANT OF SAID DIGITS, A SECOND OR GATE HAVING TWO INPUTS CONNECTED RESPECTIVELY TO RECEIVE THE PULSES REPRESENTATIVE OF THE LEAST SIGNIFICANT OF SAID DIGITS AND THE OTHER TO RECEIVE THE OUTPUT OF SAID FIRST OR GATE, A CIRCUIT FOR CONTROLLING THE CONNECTION OF A FIRST OF SAID SOURCES TO SAID OUTPUT CIRCUIT RESPONSIVE TO THE OUTPUT OF SAID SECOND OR GATE, A CIRCUIT FOR CONTROLLING THE CONNECTION OF A SECOND OF SAID SOURCES TO SAID OUTPUT CIRCUIT RESPONSIVE TO THE OUTPUT OF SAID FIRST OR GATE, A FIRST AND GATE HAVING TWO INPUTS CONNECTED RESPECTIVELY TO RECEIVE THE PULSES REPRESENTATIVE OF THE LEAST SIGNIFICANT AND THE NEXT MOST SIGNIFICANT OF SAID DIGITS, A THIRD OR GATE HAVING TWO INPUTS, ONE CONNECTED RESPECTIVELY TO RECEIVE THE OUTPUT OF SAID FIRST AND GATE AND THE OTHER TO RECEIVE THE PULSE REPRESENTATIVE OF MOST SIGNIFICANT OF SAID DIGITS, A CIRCUIT FOR CONTROLLING THE CONNECTION OF A THIRD OF SAID SOURCES TO SAID OUTPUT CIRCUIT RESPONSIVE TO THE OUTPUT OF SAID THIRD OR GATE, A CIRCUIT FOR CONTROLLING THE CONNECTION OF A FOURTH OF SAID SOURCES TO SAID OUTPUT CIRCUIT AND DIRECTLY RESPONSIVE TO THE PULSE REPRESENTATIVE OF THE MOST SIGNIFICANT OF SAID DIGITS, A FOURTH OR GATE HAVING TWO INPUTS CONNECTED RESPECTIVELY TO RECEIVE THE PULSES REPRE-