Rolls-Royce Archives
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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Unsuccessful attempt to source a suitable rectifying valve from two suppliers.

Identifier  ExFiles\Box 41\2\  Scan086
Date  18th June 1930
  
X3646

18.6.30.

X.3646.
RECTIFYING VALVE.

As a result of our EFCl/AD2.5.30 Messrs. Edison Swan Electric Co. (incorporating The B.T.H. Co.) and Messrs. Philips Lamps Ltd. were both approached with a view to their supplying us with a valve more to our requirements..

Neither of these firms however, could offer anything that was at all suitable.

EFC.
  
  


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