Device for developing or fixing exposed photographic papers in automatic picture telegraph equipment
US3329769A
Method and apparatus for facsimile electrostatic reproduction for telegraphy receivers
US3358123A
Device for transforming the hole combinations of a perforated master tape into corresponding combinations of contact potentials in devices used for cipher extension
US3117182A
Facsimile transmitter
US3038024A
Device for improving the recording of received documents in a facsimile transmitter
US3012093A
Method of successively producing the single records of a set of corrected photographic color separation records
US2962548A
Device for increasing contrasts at tone value leaps and contours in printing forms
US2938948A
Form-printing facsimile receiver
US2856459A
Apparatus for controlling facsimile transceivers
US2943148A
Apparatus for transmitting teleprinter characters
US2880270A
Method of and apparatus for electromechanicaly producing printing forms from line-originals
CA684184A
Method of and apparatus for electronic color correction
