Key telephone system with means for operatively connecting anoth
Key telephone system with reduction of delay of ring tone genera
Key telephone system with virtual private lines
Key telephone system with virtual private lines
Key telephone system, key telephone, interface unit, and...
Key telephone unit and key telephone system
Key to correlate a call with call-handling information
Key top attachment structure
Key unit
Key-in sound-generating circuit
Keyboard arrangement and mobile communication device...
Keyboard security device
Keyboard to facsimile machine transmission system
Keypad apparatus with integral display indicators
Keypad browser
Keypad button guard
Keypad device
Keypad enlarger kit
Keypad for a communication instrument, particularly a subscriber
Keypad for telephones and the like