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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3/00
Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
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B61L3/02
at selected places along the route, e.g. intermittent control; simultaneous mechanical and electrical control
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B61L3/14
to cut-off the power supply to traction motors of electrically-propelled vehicles
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