This was is part of a collection of plots from Peter B in the Netherlands. I'm unclear if I have the full set or only the ones they had extras of.

Its unclear if there is any relationship between the AT&T and the Interdesign plots

Interdesign

MACROCHIP MMG GRIDDED ARRAY
FERRANTI INTERDESIGN, INC
1985

MACROCHIP MMH GRIDDED ARRAY
FERRANTI INTERDESIGN, INC
1985

MACROCHIP MMJ GRIDDED ARRAY
FERRANTI INTERDESIGN, INC
1985

MONOCHIP A
interdesign

MONOCHIP F
interdesign
See also: https://www.richis-lab.de/KA601.htm

AT&T cells

From around 1986 / 1987

LA 400 POWER MODULE
LA 400 FET MODULE
LA 400 LINEAR ARRAY

ALA 400 STANDARD MODULE