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BSI BS 2733:1956

Specification. Intrinsically safe magneto-call telephones primarily for use in coal mines
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BSI BS 2733:1956

Specification. Intrinsically safe magneto-call telephones primarily for use in coal mines

PUBLISH DATE 1956
BSI BS 2733:1956

WITHDRAWN

Telephone ringing and speech circuits.

Magneto-generator characteristics, magneto-operated bell.

Coupling unit.

SDO BSI: British Standards Institution
Document Number 2733
Publication Date March 14, 1956
Language en - English
Page Count
Revision Level
Supercedes
Committee
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