|
US1064471A
|
|
Thermotelephone or the like.
|
|
US1152627A
|
|
Thermo-telephone or the like.
|
|
US1135687A
|
|
Thermic telephone.
|
|
GB191119011A
|
|
Improvements in and relating to Telephones.
|
|
US1135686A
|
|
Thermo-telephone.
|
|
GB191117363A
|
|
Improvements in and relating to Telephones.
|
|
GB191117300A
|
|
Improvements in and relating to Telephones.
|
|
GB191115544A
|
|
Improved Method of Manufacturing Metallic Filaments or Bands to be used particularly in connection with Thermic Telephones.
|
|
GB191111234A
|
|
Improvements in and relating to Thermo Telephones.
|
|
US998965A
|
|
Process of manufacturing hot wires for thermotelephones.
|
|
GB190919780A
|
|
Improvements in and relating to Sound Boxes of Talking Machines.
|
|
GB190919779A
|
|
Improvements in and relating to Sound Boxes of Talking Machines.
|
|
GB190919781A
|
|
Improvements in Talking Machine Records and in Devices for Recording and Reproducing Sounds.
|
|
US947490A
|
|
Means for regulating the illumination of films in kinematographs.
|
|
GB190917130A
|
|
Method of and Apparatus for Regulating the Light Thrown on the Picture Film of Cinematographs and the like.
|
