Differential current amplifier with common-mode rejection and multiple feedback paths

Claim 1

IN COMBINATION: FIRST AND SECOND TRANSISTORS OF LIKE CONDUCTIVITY TYPE; A DIRECT-CURRENT CONDUCTIVE CONNECTION FROM THE EMITTER OF SAID FIRST TRANSISTOR AND THE EMITTER OF SAID SECOND TRANSISTOR TO A COMMON POINT; MEANS FOR APPLYING A SIGNAL BETWEEN THE BASE ELECTRODES OF SAID FIRST AND SECOND TRANSISTORS AND SAID CONMON POINT; A THIRD TRANSISTOR OF TYPE COMPLEMENTARY TO SAID FIRST TRANSISTOR HAVING ITS BASE CONNECTED TO THE COLLECTOR OF SAID FIRST TRANSISTOR; A FOURTH TRANSISTOR OF TYPE COMPLEMENTARY TO SAID SECOND TRANSISTOR HAVING ITS BASE CONNECTED TO THE COLLECTOR OF SAID TRANSISTOR; A FIRST RESISTOR CONNECTING THE COLLECTOR OF SAID THIRD TRANSISTOR TO A FIRST JUNCTION POINT; A SECOND RESISTOR CONNECTING A FIRST POWER SUPPLY FROM SAID COMMON POINT TO SAID FIRST JUNCTION POINT; A THIRD RESISTOR CONNECTING THE COLLECTOR OF SAID FOURTH TRANSISTOR TO A SECOND JUNCTION POINT; A FOURTH RESISTOR CONNECTING SAID FIRST POWER SUPPLY TO SAID SECOND JUNCTION POINT; A FIFTH RESISTOR CONNECTING SAID FIRST JUNCTION POINT TO THE BASE OF SAID SECOND TRANSISTOR; A SIXTH RESISTOR CONNECTING SAID SECOND JUNCTION POINT TO THE BASE OF SAID FIRST TRANSISTOR; A SEVENTH AND EIGHTH RESISTOR CONNECTING A SECOND POWER SUPPLY FROM SAID COMMON POINT TO THE BASES OF SAID FIRST AND SECOND TRANSISTORS RESPECTIVELY; A DIRECT-CURRENT CONDUCTIVE CONNECTION FROM THE EMITTERS OF SAID THIRD AND FOURTH TRANSISTORS TO SAID SECOND POWER SUPPLY; A NINTH AND TENTH RESISTOR CONNECTING THE COLLECTION OF SAID FIRST AND SECOND TRANSISTORS RESPECTIVELY TO SAID SECOND POWER SUPPLY; A MEANS FOR DETECTING THE OUTPUT SIGNAL.