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B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
B60M1/00—Power supply lines for contact with collector on vehicle
B60M1/12—Trolley lines; Accessories therefor
B60M1/26—Compensation means for variation in length
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FR758763D1933-07-241933-07-24Dispositif pour le réglage de la tension mécanique des fils de lignes électriques aériennes et pour usages analogues
ExpiredFR758763A
(fr)