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Display device with variable capacity buffer memory
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Magnetic recording detection
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Motor driven single element printer
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Interrogation of key switches using pulse width detection
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Finger operated switching device
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Electronically controlled printer system
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Width modulated magnetic recording
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Ribbon lifting mechanism
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Print mechanism for high speed electronically.controlled type writer
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Rotary typing head
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Shaft position controlling system
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Horizontal deflection circuit
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Vertical deflection circuit
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Binary switching video amplifier
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Cartridge drive
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Data terminal for connection to telephone or teleprinter facilities
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Method for establishing a data communication connection between two full duplex modems
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Indicating system using pulsed optical techniques
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Automatic underlining in an automated typewriter system
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Display system for several fonts of characters
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