1) Electric power distribution
Found on
https://www.crosswordclues.com/clue/zinsco
Zinsco was a manufacturer of circuit breakers and electrical distribution panels, founded by Emile Martin Zinsmeyer and his son Martin Emile Zinsmeyer in the early 1930s. Originally the West Coast division of the Frank Adam Electric Company, whose main facility was in St Louis, Missouri, the company became independent as the Zinsmeyer Company foll...
Found on
http://en.wikipedia.org/wiki/Zinsco
No exact match found.
