Paul Eisler builds first printed circuit. It was installed in a radio he built.

Paul Eisler sells all rights to his subsequent inventions

associated with the circuit board for 1 British Pound.

The first printed circuit

was used by US military as a part of anti-V1 rockets.

First printed circuit board enter mass production.

Instead of hundreds of meters of cables, thin lines of copper were used. At the beginning, circuits were placed on paper boards, then they were replaced by laminate.

Lord Hailsham calls innovation of printed circuit boards one of the most important inventions of the XXth century

Printed circuits found wide range of use in radio technology.

Implementation of that technology significantly improved the manufacturing process of radio devices and allowed placing more circuits on a smaller area. This, together with LED semiconductors and transistors led to miniaturization of various electronic devices, even before the invention of microchips.