First Electric Hearing Aid (jan 1, 1898 – dec 1, 1898)
Description:
Miller Reese Hutchison creates the first electric hearing aid called the akouphone. It used a carbon transmitter in order to make the device portable. This hearing aid would amplify weak signals into strong signals using electrical currents.Added to timeline:
Date:
jan 1, 1898
dec 1, 1898
~ 11 months