Catalogue description Plant and Machinery: Neptune track recorders: includes copies of patent specifications...

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Details of AN 129/135
Reference: AN 129/135
Description:

Plant and Machinery: Neptune track recorders: includes copies of patent specifications nos 1, 051, 097 Improvements relating to Recording Apparatus and 1, 120, 363 Improvement relating to Peak Analysis Systems

Note: With plan
Date: 1967 Jan-1968 Dec
Held by: The National Archives, Kew
Former reference in its original department: 185-321-601 part 1b
Legal status: Public Record(s)
Closure status: Open Document, Open Description

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