Withdrawn
Standard
Most Recent
BS 561:1934
Alternating-current line relays (2-element, 3-position) for railway signalling purposes.
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Technical characteristics
| Publisher | British Standards Institution (BSI) |
| Publication Date | 07/23/1934 |
| Page Count | 0 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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Previous versions
15/06/1951
Withdrawn
Most Recent
BS 561:1934
Alternating-current line relays (2-element, 3-position) for railway signalling purposes.
23/07/1934
Withdrawn
Most Recent