A. Automatic teller machine
B. Time-lock safe
C. Burglar alarm
D. Pay telephone
Explanation:
William Gray, inventor of the pay telephone, also invented the inflatable chest protector worn by baseball umpires and catchers.
A. Automatic teller machine
B. Time-lock safe
C. Burglar alarm
D. Pay telephone
Explanation:
William Gray, inventor of the pay telephone, also invented the inflatable chest protector worn by baseball umpires and catchers.