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Box 606741457

 Container

Restricted

Contains 1 Result:

File

Files 389-396, 1949-57

Comprises file numbers: 389: valves, 1949-55 389/2: valve specification, 1952-7 389/4: crystal valves, 1952 396: SSB [single sideband] and crystal filters, 1951-6
Collection: The Marconi Archives
Shelfmark: MS. Marconi 1035
Extents: 1 box
Dates: 1949-57