|
US4334594A
|
|
Aerial device
|
|
US4074234A
|
|
Control system for an aerial device
|
|
US3396852A
|
|
Derrick units
|
|
US3378103A
|
|
Aerial platforms
|
|
US3273466A
|
|
Single boom derrick units
|
|
US3292715A
|
|
Earth drilling machinery
|
|
US3244239A
|
|
Portable derricks with adjustably mounted earth boring apparatus
|
|
US3154199A
|
|
Single boom derrick units
|
|
US3096886A
|
|
Single-boom derricks
|
|
US3154198A
|
|
Rotatable derricks for use on a truck or other similar mobile platform
|
|
US3033297A
|
|
Stub drivers
|
|
US3082842A
|
|
Mobile work platforms
|
|
US2936848A
|
|
Articulated aerial ladder
|
|
US2965191A
|
|
Tower vehicles
|
|
US3034658A
|
|
Portable derricks
|
|
US2933150A
|
|
Power-driven extension ladders
|
|
US2965192A
|
|
Power-driven aerial extension ladders
|
|
CA600258A
|
|
Hydraulic actuated a-frame derrick
|
