BS 1975:1953

Specification. Primary cells and batteries for intrinsically safe bell signalling circuits in coal mines.

NORMA vydána dne 23.4.1953

The information about the standard:

Designation standards: BS 1975:1953
Note: NEPLATNÁ
Publication date standards: 23.4.1953
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategorie: Technické normy BS