John Bardeen

I

Invention of the Transistor

1947

I

Invention of the Point-Contact Transistor

1947

I

Invention of the Transistor

1947

I

Invention of the Transistor

1947

I

Invention of the Point-Contact Transistor

1947

F

First point-contact transistor demonstrated

1947

I

Invention of the Junction Transistor

1948