These are not general purpose CPUs as far as I can detect, they were never sold individually for other applications.
Such dedicated devices were exactly what made the 4004 so special, it was used for calculators but could also be used in other ways because it was a true general purpose CPU.
Such dedicated devices were exactly what made the 4004 so special, it was used for calculators but could also be used in other ways because it was a true general purpose CPU.