Catalogue description papers incl personal documents, patent material rel to improvements in selective...

Details of SC MSS 281

Reference:	SC MSS 281
Description:	papers incl personal documents, patent material rel to improvements in selective electrical signalling, corresp rel to the development of a series resonant shunt, material rel to Irwin's UK and US patents, and papers rel to Irwin's work on Northern Ireland hydro-electricity schemes
Date:	1899-1962
Held by:	Institution of Engineering and Technology (IET) Archives, not available at The National Archives
Other reference:	See Annual Return 2016

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