For what does the world owe Almon Strowger a debt of gratitude?
A. Parking Meters
B. Vending Machines
C. Automatic Telephone Exchanges
D. Traffic Lights
Answer: Option C
Solution (By Examveda Team)
He was an undertaker, and legend has it, he developed the automatic switch in 1889, to stop competitors from getting his work.This Question Belongs to General Knowledge >> Inventions
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