A Selector Switch suitable for the Automatic and Selective Switching of Telephone Lines.
GB190920842A
Automatic Selective Switching Apparatus suitable for use in Telephone Systems.
GB190920840A
An Automatic Sequence Switching Device and its Control.
GB190817209A
Improvements in Telephone Exchange Systems and Apparatus therefor.
GB190817048A
Improvements in Telephone Current Transmitting Retransmitting and Reinforcing Apparatus.
GB190801950A
Improvements in Gravity Switches as applied to Telephones and the like.
GB190821075A
Improvements in Switching Apparatus for Interconnecting the Lines of a Telephone Exchange System.
GB190800197A
Improvements in Switching Apparatus for Interconnecting the Lines of a Telephone Exchange System.
GB190613050A
A Telephone Switchboard Cord Reel.
GB190609714A
Improvements in Coin Freed Apparatus and the like.
GB190601389A
Improvements in Electric Cables.
GB190511605A
Improvements relating to Retransmitting and Reinforcing Telephone Currents on Lines also used for Telegraphic Purposes or otherwise Liable to have Currents of relatively Low Frequency passing over them.
GB190511606A
Improvements in Telephone Current Retransmitting and Reinforcing Apparatus.
GB190511337A
Improvements in Safety Apparatus for use in connection with Telephones and other Electrical Apparatus
GB190511336A
Improved Means for Supporting and Enclosing Telephone and other Electrical Apparatus
GB190403431A
Improvements in Telephones.
GB190209544A
Improvements in Lead Presses.
GB190206817A
Improvements in Telephone Sets.
GB190206818A
Improvements in Flexible Conducting Cords Applicable Especially for Use in the Plug Circuits of Telephone Switchboards.
