CH377409A
(en )
1964-05-15
Calling device for standing microphone handsets
CH394301A
(en )
1965-06-30
Storage system with a comparison circuit for calling up positions
FR1220308A
(en )
1960-05-24
Telephone installation
FR1220297A
(en )
1960-05-24
Telecommunications installation
FR1235557A
(en )
1960-07-08
Electronic telephone system
AT216583B
(en )
1961-08-10
Circuit arrangement for telephone systems with connection dialers
CH367213A
(en )
1963-02-15
Circuit arrangement for telephone systems with connection dialers set by marking devices
DK97830C
(en )
1964-01-27
Telephone set.
CH350690A
(en )
1960-12-15
Telephone installation
CH374104A
(en )
1963-12-31
Telecommunication system with relay-free subscriber line circuits
CH358119A
(en )
1961-11-15
Circuit arrangement for telephone systems with dialer operation and automatic billing
AT190105B
(en )
1957-06-11
Circuit arrangement for telephone systems with direct remote dialing
CH378375A
(en )
1964-06-15
Circuit arrangement for connecting lines that can be used in both directions in telecommunication systems, in particular telephone systems
CH372096A
(en )
1963-09-30
Circuit arrangement for power supply devices in telecommunication systems, in particular telephone systems
CH364531A
(en )
1962-09-30
Circuit arrangement for an electronic selector for detouring in telecommunication systems, in particular telephone systems
CH366571A
(en )
1963-01-15
Dialing device on a telephone set
CH358123A
(en )
1961-11-15
Call counters for telephone systems
CH358122A
(en )
1961-11-15
Circuit arrangement for telephone systems with dialer operation and automatic charge printing
CH363685A
(en )
1962-08-15
Circuit arrangement for telephone extension systems with keypad selection and automatic billing
AT218080B
(en )
1961-11-10
Subscriber circuit for intercom systems
AT185410B
(en )
1956-04-25
Circuit arrangement for telephone extension systems with dialer operation
CH372071A
(en )
1963-09-30
Circuit arrangement for calculating the charges for circular connections in telex dialing systems
CH379585A
(en )
1964-07-15
Circuit arrangement for telecommunications, in particular telephone systems with frequency selection
AT174090B
(en )
1953-02-25
Circuit arrangement for telephone systems with direct dialing
CH362124A
(en )
1962-05-31
Voters, especially for telephone systems