Magnetic recording and reproducing

Claim 1

A MAGNETIC RECORDING-REPRODUCING HEAD COMPRISING IN COMBINATION, A VACUUM TUBE, ELECTRON BEAM SUPPLY MEANS INCLUDING AN ELECTRON GUN FOR SUPPLYING A RECORDING BEAM AND AN ELECTRON GUN FOR SUPPLYING A READING BEAM, EACH SAID GUN BEING IN SAID TUBE, A ROW OF RECORDING TARGETS IN SAID TUBE, A ROW OF RECORDING-REPRODUCING NEEDLELIKE ELECTROMAGNETIC TRANSDUCERS EACH HAVING A COIL THEREON IN SAID TUBE, SAID BEAM SUPPLY MEANS INCLUDING CIRCUIT MEANS CONNECTING EACH SAID TARGET THROUGH A SAID COIL TO ENABLE SAID BEAM TO COMPLETE A CIRCUIT THROUGH THE SAID COIL REPRESENTING THE TARGET STRUCK BY THE BEAM, A MAGNETIC RECORDING MEDIUM IN MAGNETIC PROXIMITY TO AN END OF SAID TRANSDUCERS, AND MEANS TO SWEEP SAID BEAM ACROSS SAID TARGETS, SIGNAL MEANS FOR VARYING SAID BEAM AS IT SWEEPS TO CAUSE CURRENTS IN THE SAID COILS TO RECORD THE SIGNAL ON THE MEDIUM, SIGNAL REPRODUCING TARGET MEANS IN SAID TUBE, SAID READING BEAM BEING DIRECTED TO SAID REPRODUCING TARGET MEANS AND PAST THE ENDS OF SAID TRANSDUCERS OPPOSITE THE RECORDING MEDIUM WHEREBY THE RECORDED SIGNAL DEFLECTS SAID BEAM TO PARTICULAR REPRODUCING TARGET AREAS ACCORDING TO THE SIGNAL RECORDED.