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US2348945A
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Protected internal bearing for concrete mixers
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US2291539A
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Concrete distributing apparatus
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US2227067A
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Concrete handling apparatus
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US2219863A
|
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Discharge means for concrete mixers
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US2269014A
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Batch meter
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US2191072A
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Hydraulic water control and lock for concrete mixers
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US2184251A
|
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Closure for concrete mixing drums
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US2282467A
|
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Rotary concrete mixer
|
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US2238944A
|
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Concrete conveying apparatus
|
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US2224958A
|
|
Welding manipulator
|
|
US2119144A
|
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Concrete mixing machine
|
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US2074073A
|
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Concrete distributing apparatus
|
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US2122249A
|
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Seal for rotary concrete mixing drums
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US2136045A
|
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Concrete mixer with two compartment drum
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US2067826A
|
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Concrete mixer
|
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US1908953A
|
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Cable winding means for loading skips
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US1963952A
|
|
Concrete mixer
|
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US1963953A
|
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Concrete mixer
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US1891899A
|
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Mast distributing apparatus
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US1852436A
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Stabilizing means for concrete mixers
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