Alfred Tomatis
If you mean "ear trumpets," a non-electronic device to amplify sound, they were invented around London in the 1600's. The first electronic hearing aid was made in Alabama around 1898.
electronic bees
Electronic mail was invented in 1971 by Ray Tomlinson.
Electronic mail was invented in 1971 by Ray Tomlinson. He was in the US when he invented it.
Dave Simmons invented the electronic drumset.
There is an ear thermometer?
the electronic whiteboards were invented by Geaghan Bernard, Atwood Stephen, and Sprague James.
they were invented in the 1990's.
glen whipple
when they decided to invented the interactive whiteboard
Never heard of electronic fuel.
Justbeats are headphones that Justin Bieber invented there is on ear headphone and in ear headphones on ear are 199.95 and in ear are 119.95