Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B61
RAILWAYS
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B61L
GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
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23/00
Control, warning or like safety means along the route or between vehicles or trains
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B61L23/002
Control or safety means for heart-points and crossings of aerial railways, funicular rack-railway
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B61L23/005
Automatic control or safety means for points for operator-less railway, e.g. transportation systems
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