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US2802584A
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Dipper stick extension
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US2689656A
|
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Crane boom having a hinged section
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US2754985A
|
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Offset boom for digging machines
|
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US2770379A
|
|
Boom and boom-operating means for dipper stick
|
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US2754977A
|
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Grave digger
|
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US2689661A
|
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Dipper stick and dipper operating means
|
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US2655269A
|
|
Bucket carrying turn post for diggers
|
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US2618981A
|
|
Variable-speed reduction unit
|
|
US2584288A
|
|
Endless conveyer of the belt type
|
|
US2580955A
|
|
Speed reduction unit
|
|
US2580954A
|
|
Sight for trench excavators
|
|
US2668738A
|
|
Interchangeable ground traction for self-propelled vehicles
|
|
US2629945A
|
|
Excavating shovel digging teeth arrangement
|
|
US2546869A
|
|
Variable-speed reduction unit
|
|
US2619222A
|
|
Centering and take-up means for belt conveyers
|
|
US2584287A
|
|
Digging adjustment for endless type trench excavators
|
|
US2599778A
|
|
Trench excavator
|
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US2472758A
|
|
Trench excavator shovel and scraper
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CA912505A
|
|
Telescoping hydraulic cylinder arrangement for multiple section extensible booms
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CA466478A
|
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Trench excavator shovel and scraper
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