Do you think they would still use the same name for this?

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Well, technology advances.
Old ones needed a 6V car battery; modern ones are happy with a couple AA or whatever.

As a side note, the original "medical" ones in the 20's were AC powered and had some kind of induction motor, the size you would expect in a food blender or medium desktop fan.
And I guess were maintained or repaired by regular electro tech guys.
 
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