CH293821A
(en )
1953-10-15
Automatic telecommunication center.
CH312455A
(en )
1955-12-31
Telecommunication system.
CH277808A
(en )
1951-09-15
Selector switch.
CH310991A
(en )
1955-11-15
Automatic telecommunication center.
CH304899A
(en )
1955-01-31
Automatic telecommunications installation.
DK77095C
(en )
1954-02-15
Rotatable switch for automatic telephone systems.
CH291946A
(en )
1953-07-15
Rotary selector for automatic telephone systems.
CH304203A
(en )
1954-12-31
Telecommunication system.
CH282227A
(en )
1952-04-15
Telephone station with selector switch.
CH288570A
(en )
1953-01-31
Automatic switching device.
CH285598A
(en )
1952-09-15
Installation auto switch.
CH298270A
(en )
1954-04-30
Switch cartridge.
CH297626A
(en )
1954-03-31
Automatic telephone installation.
DK78201C
(en )
1954-10-04
Automatic subscriber switch.
CH273880A
(en )
1951-02-28
Crossbar switch for automatic telephone systems.
DK89108C
(en )
1960-06-07
Line selection system for automatic telephone exchanges.
DK76923C
(en )
1954-01-04
Selects, especially for automatic telephone systems.
DK85870C
(en )
1958-07-14
Coordinate selector type switching mechanism for automatic telephone systems.
DK80830C
(en )
1956-04-09
Coordinate selector type switching mechanism for automatic telephone systems.
CH272112A
(en )
1950-11-30
Telephone.
CH288261A
(en )
1953-01-15
Installation auto switch.
CH306520A
(en )
1955-04-15
Telephone installation.
BE486835A
(en )
1949-02-15
Telecommunication system.
AT176884B
(en )
1953-12-10
Automatic telecommunication switching system
DK77212C
(en )
1954-03-08
Automatic switching on and off, overload-responsive switching mechanism.