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BSI BS 519:1950

Specification for tractive armature direct current neutral-polar line relays for railway signalling
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BSI BS 519:1950

Specification for tractive armature direct current neutral-polar line relays for railway signalling

PUBLISH DATE 1950
PAGES 16
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REAFFIRMED IN 1980
SDO BSI: British Standards Institution
Document Number BS 519
Publication Date July 14, 1950
Language en - English
Page Count 16
Revision Level
Supercedes
Committee
Publish Date Document Id Type View
July 14, 1950 BS 519:1950 Revision