Cliff, thanks for the Ediphor article. Here'e an interesting link that is similar to your PDF but has more details and some intereseting pictures of the Ediphor Theatre Television System.
http://www.experimentaltvcenter.org/...3?id=16&page=1
Gretag manufactured a modern version HDTV capable based on the color dot sequential system replacing the original CBS field sequential method.
Another system that owes much to Ediphor was the GE Talaria system
http://www.hi-def.com/12K.html
Tom