Authenticator device for precluding compensating text modificati
Autokey code generator
Autokey generator for secret communication system
Automatic delay compensator
Automatic fine tuning defeat circuit
Automatic frequency control of voltage variable capacitor tuned
Automatic gain control circuit for radio receiver
Automatic page selectors
Automatic selection of decryption key for multiple-key encryptio
Automatic teletypewriter
Bi-directional digital communication network
Bi-directional logic system
Bi-directional signaling apparatus
Bialphabetic teleprinter for texts in latin and arabic character
Bidirectional single wire data transmission and wrap control
Block cipher system for data security
Block-cipher cryptographic system with chaining
Byte stream selective encryption/decryption device
Carrier wave reproducer device for use in the reception of a mul
Carrier-modulated coherency monitoring system