Catalogue description Early correspondence relating to the ENIGMA cypher machine, including the patent...

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Details of HW 25/6
Reference: HW 25/6
Description:

Early correspondence relating to the ENIGMA cypher machine, including the patent specification and photographs

Note: LANGUAGE: English and French or German
Date: 1924 Jun 02-1936 Mar 25
Held by: The National Archives, Kew
Legal status: Public Record(s)
Closure status: Open Document, Open Description

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