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1947 - file of large Westinghouse circuit breakers for protecting and controlling flow of electric power

CIRCUIT BREAKERS

CD 1963057 E&MP 23.016

Electric Insulating and Insulators

April 23, 1947

File of large Westinghouse circuit breakers for protecting and controlling flow of electric power.
















Original Caption by Science Service
Westinghouse



National Museum of American History

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