This idea is at least sixty years old. Science fiction fans recall the 1960 short story Callihan and the Wheelies by Stephen Barr:
Amanda glared at the little object on wheels - it was about the size of a rollerskate and it seemed to be considering what to do next. It turned its photoelectric scanners this way and that, waving its jointed grappling arms about. Then it appeared to make up its mind, and trundled over to a wall socket in the baseboard, plugged itself in and proceeded to recharge itself.
(A self-charging robot)
Scroll down for more stories in the same category. (Story submitted 4/19/2019)
Robotics Jobs In The Food Industry
'The efficient robot waiter of the Sky Club had cleared away the remnants of an epicurean meal.' Nat Schachter and Al Zagat, 1931.
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