Transistor network voltage regulator

Claim 1

A VOLTAGE REGULATOR FOR SUPPLYING A LOAD FROM A DIRECT-CURRENT VOLTAGE SOURCE COMPRISING A THREE TERMINAL NETWORK, A P-N-P LINE TRANSISTOR HAVING ITS COLLECTOR CONNECTED TO ONE OF SAID THREE TERMINALS AND ITS EMITTER CONNECTED TO ANOTHER OF SAID THREE TERMINALS, A FIRST RESISTOR CONNECTING SAID EMITTER TO THE THIRD OF SAID THREE TERMINALS, A SECOND P-N-P TRANSISTOR HAVING ITS COLLECTOR CONNECTED TO THE BASE OF SAID LINE TRANSISTOR AND ITS EMITTER CONNECTED THROUGH A FIRST DIRECT CURRENT SOURCE TO SAID THIRD TERMINAL, A CONNECTION BETWEEN A POINT ON SAID FIRST RESISTOR AND THE BASE OF SAID SECOND P-N-P TRANSISTOR, AN N-P-N TRANSISTOR HAVING ITS COLLECTOR CONNECTED TO THE BASE OF SAID LINE TRANSISTOR THROUGH A SECOND RESISTOR AND ITS EMITTER CONNECTED THROUGH A THIRD RESISTOR AND A SECOND DIRECT-CURRENT SOURCE TO SAID THIRD TERMINAL, A THIRD DIRECT-CURRENT SOURCE CONNECTED BETWEEN THE BASE OF SAID N-P-N TRANSISTOR AND SAID THIRD TERMINAL, SAID N-P-N TRANSISTOR OPERATING IN ITS SATURATED RANGE WHEN SAID LOAD CURRENT IS NEAR THE LOW-CURRENT END OF ITS OPERATING RANGE, A FOURTH RESISTOR BEING CONNECTED BETWEEN THE EMITTER OF SAID LINE TRANSISTOR AND THE EMITTER OF SAID N-P-N TRANSISTOR.