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file S (Stack)Radax Company

All about "Nernst" Filaments and their use in Electric Lamps for Projection and Enlarging, etc.

Issued by the Radax Company, 12, Brownlow Street, High Holborn, London, W.C. (HOL 5257). [See also 1960-124: illustrations of "Radax" and "Lufax" lamps]. Presented by A. C. Hyde-Parker

[1960-123]

[n.d.]


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