CH302327A
(en )
1954-10-15
Method for the transmission of stereophonic signals.
CH321711A
(en )
1957-05-15
Automatic telephone exchange system
CH329215A
(en )
1958-04-15
Automatic telecommunication system
CH307826A
(en )
1955-06-15
Ultra-shortwave transmission installation.
FR1071914A
(en )
1954-09-07
Automatic telephone installation
FR1147009A
(en )
1957-11-18
Multiplex transmission system
CH339254A
(en )
1959-06-30
Installation for the transmission of television signals
AT182339B
(en )
1955-06-25
System for the automatic transmission of registered signals by telephone
FR1062795A
(en )
1954-04-27
Signal receiver
FR1059052A
(en )
1954-03-22
Automatic transmission for vehicles
CH325742A
(en )
1957-11-15
Automatic telephony installation
CH345666A
(en )
1960-04-15
Installation for the transmission of television signals
CH310371A
(en )
1955-10-15
Television transmission system.
AT173359B
(en )
1952-12-10
Automatic trailer coupling
CH295549A
(en )
1953-12-31
Switching arrangement for the transmission of automatically repeated call signals.
FR1052708A
(en )
1954-01-26
Television receiver
FR1040976A
(en )
1953-10-20
Pipe denicotinizer system
DK81187C
(en )
1956-10-01
Coupling for combination of electrical signals.
FR1044860A
(en )
1953-11-23
Automatic threshold for building openings
AT170964B
(en )
1952-04-10
Watertight fitting
DK85869C
(en )
1958-07-14
Signal transmission system.
FR1075238A
(en )
1954-10-14
Clutch refinements
DK77455C
(en )
1954-04-26
Coupling to automatic signaling systems.
AT182957B
(en )
1955-08-25
Device for the automatic switching of change gears
FR1048263A
(en )
1953-12-21
Automatic telephone system