|
DE4309907A1
|
|
Keyboard
|
|
DE3906518A1
|
|
Circuit for recording and storing charge information
|
|
DE3811732A1
|
|
Circuit arrangement for testing the functioning of the catalytic converter of motor vehicles
|
|
DE3741278C1
|
|
Arrangement for uniform utilisation of several addressable memory positions of an EEPROM
|
|
DE3733717A1
|
|
Circuit for programming a telephony system or a telecommunication terminal
|
|
DE3728230A1
|
|
Circuit for detecting an incoming ringing signal in a telephone set
|
|
DE3728232A1
|
|
Method for testing circuit boards
|
|
DE3541114A1
|
|
Arrangement for reducing memory errors of a solid-state memory, in particular an EEPROM
|
|
DE3541115A1
|
|
Arrangement for reducing memory errors of a byte-organised solid-state memory
|
|
DE3505213A1
|
|
Circuit in a telephone apparatus
|
|
DE3505264C1
|
|
Circuit in a telephone apparatus
|
|
DE3501046A1
|
|
Key, particularly for keypads of telephone sets
|
|
DE3433815A1
|
|
Telephone set
|
|
DE3313035A1
|
|
Method and circuit for transmitting digital information
|
|
DE3313089A1
|
|
Circuit arrangement for reducing the stimulus resistance of telephone sets
|
|
DE3312873A1
|
|
Method of safeguarding data in memories
|
|
DE3239105A1
|
|
Power-feeding circuit in a telephone set
|
|
DE3213968A1
|
|
Telephone set
|
|
DE3212514C1
|
|
Station circuit in a telephone set
|
|
DE3209181A1
|
|
Feed circuit for telephone sets
|
