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Signal Compression or Expansion System Using Variable Azimuth Magnetic Recording
Magnetic Duplicating Method and Means
Transducer System Having a Series of Cores with First and Second Windings with A.C. Signals Applied Thereto
Cross Field Transducer Head with Housing as Cross Field Return Path
Magnetic Recorder Sound Unit
Method and Means of Magnetic Recording
Electromagnetic Transducer Head
Magnetic Record Player
Magnetic Impulse Record Member, Magnetic Material and Method of Making Magnetic Material
Bifilar Magnetic Recording System
Signal Transducer Systems
Magnetic Transducer System
Magazine Type Magnetic Recording and Reproducing Device
Electromagnetic Transducer Head
Magnetic Transducer Head Assembly
Magnetic Transducing Assembly
Neon Lamp Volume Indicator
Channel Indexing System with Manual or Automatic Operation and with Manual Fine Adjustment
Compensating Device for a Magnetic Recording-Reproducing Head
Video Transducer System with Magnetic Transducer Head Having Output Winding Means Resonant at a Mid Band Resonance Frequency

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