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BS 1409:1947 | 11 Nov 1947 | BSI Knowledge
Standard
Withdrawn
BS 1409:1947
Letter symbols for electronic valves
Published:
11 Nov 1947
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Withdrawn:
Date not available
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Product Details
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ICS Codes
01.080.40 Graphical symbols for use on electrical and electronics engineering drawings, diagrams, charts and in relevant technical product documentation
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BSI