Method of and means for automatic colour selection
US2524531A
Apparatus for transforming halftone documents into a printing weft
US2206527A
Photoelectric reading system
GB460127A
Improvements in or relating to picture telegraph transmitters
GB437997A
Improvements in or relating to electrical signalling systems
GB418429A
Improvements in or relating to thermionic oscillation generators
DE656802C
Device for the frequency stabilization of self-excited tuning forks by electromagnetic means
DE614673C
Device for converting intensity-changing signals into signals of the same intensity and variable duration, in particular for the purpose of image transmission
GB381768A
Improvements in or relating to picture-telegraph, television and like systems
DE570383C
Method for achieving a sufficiently linear characteristic for the current causing the remote image transmission as a function of the brightness values of the image
GB377323A
Improvements in or relating to methods and apparatus for coding and decoding documents
GB372498A
Improvements in or relating to thermionic valve circuit arrangements
GB363525A
Improvements in or relating to synchronizing systems
DE606435C
Method to compensate for distortions caused by the electrical transmission of events by transmission organs with non-linear characteristics
GB354249A
Improvements in or relating to methods and apparatus for coding and decoding documents
ES115498A1
Device for the broadcasting of documents, images and the like.
ES114479A1
Device for the broadcasting of documents.
GB311743A
Improvements in or relating to television
GB311742A
Improvements in or relating to electrically maintained tuning forks
