John Bardeen
Foundations
Worked with Walter Brattain on the first working point-contact transistor.
Reviewed: 2026-10-16

John Bardeen — co-developed → Point-contact transistor
Date: 1947-12
Institutional history.
https://www.nokia.com/blog/the-transistor-75-years-since-the-famed-nokia-bell-labs-invention-changed-the-world/

John Bardeen — researcher at → Bell Laboratories
Date: 1947
Specific technical role.
https://www.nokia.com/blog/the-transistor-75-years-since-the-famed-nokia-bell-labs-invention-changed-the-world/