Letter from John Walton to William Grey Walter, 11 February 1943

Reports the filing of Walter's patent for the frequency analyser.

Details

Measurements:
204.00mm (height)
164.00mm (width)
Extent:
1 letter
Identifier:
BURD/A/08/W06
Access:
Open Access
rights:
Copies may be supplied in accordance with current copyright legislation and Science Museum Group terms and conditions

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