ClassID:

68575

B61L3/20 - CPC Classification

Classification description:

Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal; Continuous control along the route using electric current passing between devices along the route and devices on the vehicle or vehicle train employing different frequencies or coded pulse groups, e.g. using currents carried by traction current

Recent Application in this class: