CH319082A
(en )
1957-01-31
Communication facility
CH285917A
(en )
1952-09-30
High-voltage disconnectors, in particular for outdoor installation.
CH319419A
(en )
1957-02-15
Automatic telephone installation
CH329944A
(en )
1958-05-15
Communication facility
CH312455A
(en )
1955-12-31
Telecommunication system.
CH324915A
(en )
1957-10-15
Circuit arrangement for telecommunications, in particular telephone systems
CH304899A
(en )
1955-01-31
Automatic telecommunications installation.
CH317711A
(en )
1956-11-30
Multiple switches for telecommunication systems, in particular telephone systems
CH295211A
(en )
1953-12-15
Ribbon cables for telephone systems.
FR1031047A
(en )
1953-06-18
Telephone installation
CH314163A
(en )
1956-05-31
Selector switches for telecommunication systems, in particular telephone systems
AT170120B
(en )
1952-01-25
Self-breakers, in particular for step switches in telephone systems
CH306520A
(en )
1955-04-15
Telephone installation.
AT173737B
(en )
1953-01-26
Rotary selector for telecommunication systems, in particular telephone systems
CH315748A
(en )
1956-08-31
Telegraph installation
AT172539B
(en )
1952-09-25
High-voltage disconnectors, in particular for outdoor installation
CH305270A
(en )
1955-02-15
Loudspeaker bilateral telephone system.
AT172816B
(en )
1952-10-25
Circuit arrangement for company lines in telecommunications, in particular telephone systems
AT168995B
(en )
1951-09-25
Rope support for lightning protection systems
AT182121B
(en )
1955-05-25
Electrical transmission, in particular communication systems
AT181306B
(en )
1955-03-10
Lightning protection system for buildings
CH280360A
(en )
1952-01-15
Suspension rope clamp for cable suspension systems
AT176006B
(en )
1953-09-10
Walkable cover grille, especially for basement windows
AT175056B
(en )
1953-06-10
Installation element for buildings
AT171124B
(en )
1952-04-25
Circuit arrangement for transmissions, in particular for alternating current transmissions in telecommunications systems