|
GB191309833A
|
|
Improvements in Printing Telegraphs.
|
|
GB191016360A
|
|
Improvements in or relating to Wireless-operated Electrical Signalling Indicating or like Means.
|
|
GB191016253A
|
|
Printing Telegraph.
|
|
GB190901551A
|
|
Improvements in Electrical Telegraphic Type-writing Machines.
|
|
GB190410858A
|
|
Improvements in Receiving Apparatus for Wireless Telegraphy.
|
|
GB190317643A
|
|
Improvements in the Arrangement of Steel Magnetic Armatures for Electromagnet Pairs.
|
|
CA81338A
|
|
Morse telegraph apparatus
|
|
GB190210888A
|
|
Improvements in Electromagnetic Devices for Producing Oscillatory Motion
|
|
US714452A
|
|
Polarized electromagnet.
|
|
GB190122711A
|
|
Improvements in Apparatus for Reversing the Motion of a Reciprocating Body by Electric Current Impulses Transmitted through a Single Line
|
|
GB190122710A
|
|
Improvements in Telegraph and Telephone Systems.
|
|
GB190121602A
|
|
Improvements in Polarized Electro-magnetic Devices.
|
|
GB190111422A
|
|
Improvements in Devices for Automatically Unrolling the Paper Ribbon in Morse Apparatus.
|
|
GB190108102A
|
|
Improvements in Switch Systems for Telephone Circuits.
|
|
CA70865A
|
|
Device for controlling propulsion apparatus
|
|
GB190011808A
|
|
Improvements in Party Line Telegraph and Telephone Systems.
|
|
CA69609A
|
|
Electric relay
|
|
GB190008398A
|
|
Improvements in Automatic Telegraphic Receiving Instruments for MOrse Characters.
|
|
GB190007082A
|
|
Improvements in Printing Telegraphs
|
|
GB190004586A
|
|
Improvements in Telegraph Receivers.
|
