The Saga of Marconi Osram Valve

Written by admin on September 18, 2011. Posted in Historical

The Saga of Marconi Osram Valve.

A history of valve-making with illustrations, information and descriptions of valves and technologey from 1904 to 1960 where thermionic valves were THE technology!

346 pages. £17.50 plus p&p

Order The Saga of Marconi Osram Valve 1 @ £17.50

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