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Letter symbols for electronic valves.
STANDARD published on 11.11.1947
Designation standards: BS 1409:1947
Note: WITHDRAWN
Publication date standards: 11.11.1947
SKU: NS-59426
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Category: Technical standards BS
Latest update: 2026-08-21 (Number of items: 2 298 377)
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