General Knowledge - Inventions - Discussion

Discussion :: Inventions - Section 1 (Q.No.57)


What invention was first installed at a Hartford, Connecticut bank in 1889?

[A]. Automatic teller machine
[B]. Time-lock safe
[C]. Burglar alarm
[D]. Pay telephone

Answer: Option D


William Gray, inventor of the pay telephone, also invented the inflatable chest protector worn by baseball umpires and catchers.

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