1 janv. 1889 - William Gray's design made it so the coins of different denominations traveled down separate chutes where they struck bells and gongs that the operator could hear to verify the payment. With these phone, people paid after they talked on the phone and the money was non refundable.
Ajouté au bande de temps:
Date:
1 janv. 1889
Maintenaint
~ Il y a 136 ans