Invented the “electric water heater”?
I have a water heater that was intended to sit on a wood stove more than a hundred years ago, with the water pipes going in and out of it, if you put a natural gas burner under it, then it became a “gas water heater”, a propane burner made it a “propane gas water heater”, if you put an electric element in it, it became an “electric water heater”.
Not exactly earth shattering ‘inventing’.
Well somebody had to do it first. And of course it was a woman who did it.
No, the chart says electric hot water heater. Why a woman would want to invent a device to heat hot water, I don't know.