182 / | HD | FIRE ESCAPE, LADDER, OR SCAFFOLD |
63.1 | DF | HAVING TRANSPOSITIONING BASE AND ERECTING MEANS {4} |
64.1 | DF | .~ Ladder pivotably mounted on transpositioning base (e.g., on vehicle) {2} |
68.1 | DF | .~.~ Extension ladder pivotally mounted to be erected about a horizontal axis {3} |
69.1 | DF | .~.~.~ Having lazy tong extending means {2} |
69.2 | .~.~.~.~ And winch to actuate lazy tong |