Then there is the Philco "Apple" project from the early 50's, with a tube design that goes back to the 40's. Their attempt at a rectangular tube with phosphor stripes using a secondary reflective "indexing" signal to plot the beam across the face to regulate beam emission.
I came across a mountain of their research documents that Chuck A is posting on his web site as he can scan them. Some of the documents are now available for .pdf viewing at this time. More to come.
It appears that they built about 12 sets...all gone now...and many attempts at the tube itself. Failures galore. Some of the schematics and documents acknowledge their copying of the CTC7 for most of the circuits with mods for the indexing system where needed.
One of the posted documents casually mentions an attempt at a dot-phosphor set being developed that would turn out to be the rare TV123 roundie. There was even a TV122 and TV121. This set appears to be completely Philco's own design. No borrowing here.
I have a Radio-Electronics magazine cover from January 1957 that shows the set on the cover...probably with a pasted-up color image which I will scan and post later. For that matter, it is a very good paste-up which may be an actual photo of it working. The dial and control arrangement is what ended up in the TV123, but turned on it's side.
You can follow this trip down memory lane...although quite engineering oriented...at;
http://www.myvintagetv.com/philco_apple_tube.htm