BS 452:1932

Tractive armature direct-current neutral track relays.

NORMA vydaná dňa 1.1.1932

The information about the standard:

Designation standards: BS 452:1932
Note: NEPLATNÁ
Publication date standards: 1.1.1932
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS