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US2399375A
|
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Walking apparatus for excavators
|
|
US2399417A
|
|
Walking tractor
|
|
US2404494A
|
|
Rotary seal
|
|
US2348382A
|
|
Safety device for hoisting mechanism
|
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US2295344A
|
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Friction clutch
|
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US2268017A
|
|
Leveling device
|
|
GB534687A
|
|
Improvements in or relating to propelling mechanism for moving heavy machines
|
|
US2179765A
|
|
Walking tractor
|
|
US2139254A
|
|
Excavating machine
|
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US2133406A
|
|
Fair-lead
|
|
US2191696A
|
|
Collapsible gantry
|
|
US2073539A
|
|
Excavating machine
|
|
US2080163A
|
|
Boom for excavating machines or the like
|
|
US1981267A
|
|
Protector for dipper doors
|
|
US1966551A
|
|
Locking device for foot levers
|
|
US1951410A
|
|
Excavating machine
|
|
US1922357A
|
|
Tumbler for crawling traction mechanism
|
|
US1925728A
|
|
Clutch mechanism
|
|
US1890728A
|
|
Power excavator
|
|
US1890727A
|
|
Excavator construction
|
