Having Horizontally Swinging Boom Or Bridge Patents (Class 212/223)
- Plural booms (Class 212/233)
- With adjacent load-supporting rack (Class 212/234)
- Including means for sluing boom as it is swung vertically (Class 212/235)
- Including plural actuating means converging toward boom tip to effect both horizontal and vertical swinging (Class 212/236)
- Including means to swing boom vertically (Class 212/237)
- Having specific engager for load (Class 212/242)