Emanuel Stiebler >> https://apps.dtic.mil/dtic/tr/fulltext/u2/a086098.pdf > GREAT FIND! I think it is the fridge I was talking/thinking about.
I think it's an early generation from Grinnell. Note the year ~1977. The MIT one was from 1976, but maybe the same model GMR-27(0?). The DTIC document describes an interface based on DR-11, same as MIT. And the commands seem to match. I have made emulators for more obscure hardware than this.
