Revolving bolts for contact wire clamp for overhead equipment; revolving bolts with thread
架空设备接触线夹用旋转螺栓；带螺纹旋转螺栓

1983-05-01

Revolving bolts for contact wire clamp for overhead equipment
架空设备接触线夹用旋转螺栓

1981-09-01

Contact wire clamps for screwbolts, for grooved contact wire
螺纹螺栓用接触线夹 槽形接触线用

1976-11-01

Electric traction; dropper clamp for grooved contact-wires and catenary
电力牵引；槽形接触线和接触网用吊线夹

1982-05-01