Description
Class B60M : POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES
Subclass 1/23: Power supply lines for contact with collector on vehicle (collectors therefor B60L 5/00) Trolley lines; Accessories therefor Arrangements for supporting or suspending trolley wires, e.g. from buildings Arrangements for suspending trolley wires from catenary line