Bloomfield, Louis A. "Question 658"
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19 Mar 2018. 19 Mar 2018 <
658. What was the profession of A. B. Strowger, the inventor of the Step by Step Switching System? — GC, Pleasanton, CA
Mr. Strowger was apparently a Kansas undertaker when he developed his automatic telephone switching system.
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Louis A. Bloomfield
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