4. Wheel substitutes for land vehicles
  5. Wheel on top of upper track run

Riggers Manufacturing Co.

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Counterbalanced crane structure

Traversing hoists – Having means facilitating assembly or disassembly – Of counterweight from hoist
Patent

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Crane

Traversing hoists – Having means facilitating assembly or disassembly – Of counterweight from hoist
Patent

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Crawler suspension system

Wheel substitutes for land vehicles – Wheel on top of upper track run
Patent

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Gantry having adjustable side supports

Traversing hoists – Having boom shiftable vertically along a linear path – Length of hoisting cable between boom and load decreases...
Patent

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