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US2482114A
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Shock absorber for cable tool drilling machines
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US2117084A
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Sheave mounting for drillers
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US2121078A
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Supporting mechanism for the crown sheave of a drilling machine
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US2095322A
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Trip mechanism for dumping buckets
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US2108057A
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Tool guide for drilling machines
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US1990587A
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Skimmer scoop
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US1850539A
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Tripping mechanism for dumping scoops
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US1739952A
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Boom for excavating machines
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US1772451A
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Excavating machine
|
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US1709466A
|
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Ditcher-scoop assembly
|
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US1716432A
|
|
Excavating scoop
|
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US1797642A
|
|
Excavator scoop
|
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US1783831A
|
|
Excavator scoop
|
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US1782613A
|
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Fishing tool
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US1560147A
|
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Excavating machine
|
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US1543250A
|
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Excavating machine
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DE432247C
|
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Excavator bucket guided adjustable on a boom
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US1511115A
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Atch mechanism for dumping scoops
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US1511114A
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Excavating machine
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US1536390A
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Skimmer-scoop assembly
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