Article about Chromatron Tube

[dtvmcdonald]

Let me get this right: the Chromatron they sold in the US, 7010U,
was a three gun tube, inline guns, with ? (one or three) ? lenses
(Trinitron has one, PortaColor has three) and TWO HV voltages, one
to the screen and one to the wire grid resulting in a focusing effect
between grid and screen. There was no AC applied to the grid.

Is that correct reading? What about the (19 inch???) Chromatron
said to have been sold in Japan???

I'm mixed up.