Letter from William Grey Walter to George Dawson, 30 December 1943

Describes his conversion of the analyser pen to tube feed and the use of softer coupling springs in the Grass ink writer. Describes Lay (Marconi) bid for the London County Council E.E.G. contract.

Details

Extent:
210
264
Identifier:
BURD/A/12/GD07
Access:
Open Access

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