CH8183A
(de )
1894-08-31
Apparat zum Anrufen einer beliebigen Stelle in Telegraphen- oder Fernsprechanlagen
CH8915A
(de )
1895-02-15
Vorrichtung zur Beseitigung der Störungen in Telephonleitungen
GB189406482A
(en )
1894-06-30
Improvements in or relating to Multiple Telephonic Systems and Apparatus.
GB189406888A
(en )
1895-02-09
Improvements in Telegraphic and Telephonic Apparatus.
GB189508222A
(en )
1896-02-29
Improvements in Telephonic Systems and Apparatus.
GB189416418A
(en )
1895-08-24
Improvements in and connected with Telephonic Apparatus.
DK3796C
(da )
1901-03-18
Apparat til Tælling af Telefonsamtaler.
GB189415004A
(en )
1895-08-03
Improvements in Telephonic Installations.
GB189415617A
(en )
1895-06-22
Improvements in Apparatus for Registering the Number or Duration of Telephonic Conversations.
GB189420416A
(en )
1894-12-15
Improvements in Parallel Ruling Apparatus.
GB189512187A
(en )
1896-05-09
Improvements in Telephonic Apparatus.
GB189522717A
(en )
1896-10-31
Improvements in Telephonic Apparatus.
GB189421347A
(en )
1894-12-08
Improvements in Systems of Telegraphic or Telephonic Exchanges.
GB189404728A
(en )
1894-04-28
Improvements in Dredging Apparatus.
GB189414774A
(en )
1894-09-01
Improvements in Dredging Apparatus.
GB189418225A
(en )
1894-10-27
Improvements in Dredging Apparatus.
GB189512394A
(en )
1896-04-18
A New or Improved Apparatus for Indicating the Time and Number of Telephonic Communications.
GB189403667A
(en )
1894-12-22
Improvements in Telegraphic Apparatus.
CH7932A
(de )
1894-07-15
Vorrichtung zur Beseitigung der Störungen in Telephonleitungen
CA48597A
(en )
1895-04-03
Telephonic apparatus
GB189403111A
(en )
1894-04-14
Improvements in Electric Signalling Devices for Telephone or similar Circuits.
CH23883A
(de )
1902-09-30
Kabel für Fernsprechzwecke
GB189415403A
(en )
1895-03-16
Improvements in Automatic Alarm Devices for Use in connection with Telephones and Microphones.
GB189406721A
(en )
1895-02-23
Improvements in Apparatus for Signalling between Police Stations and District Call Boxes.
ES17714A1
(es )
1895-09-16
Un aparato para instalaciones telefónicas.