|
GB851549A
|
|
Improvements relating to electric cables
|
|
GB322015A
|
|
Improvements relating to electrical relays
|
|
GB294715A
|
|
Improvements in and relating to double-current cable code telegraphy
|
|
GB292281A
|
|
Improvements in and relating to electric telegraphic systems
|
|
GB287259A
|
|
Improvements in and relating to thermionic amplifiers
|
|
GB287229A
|
|
Improvements in or relating to diplex and multiplex telegraphy
|
|
GB284046A
|
|
Improvements in and relating to calling devices in electric telegraphy
|
|
GB284361A
|
|
Improvements in and relating to electric signalling systems
|
|
GB267180A
|
|
Improvements in and relating to electric telegraphic systems
|
|
GB242006A
|
|
Improvements in and relating to electric telegraphy
|
|
GB240906A
|
|
Means for correcting or minimizing distortion of signals in electric telegraph systems
|
|
GB238622A
|
|
Improvements in and relating to synchronising systems
|
|
GB221876A
|
|
Improvements in and relating to the compensation of variations in the periodicity ofvibrating reeds or the like
|
|
GB221844A
|
|
Electric motors
|
