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US2693282A
|
|
Hopper
|
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US2291109A
|
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Expansion joint
|
|
US2031388A
|
|
Dredging apparatus
|
|
US2035199A
|
|
Means for handling sand
|
|
US1737343A
|
|
Unloading mechanism for ships
|
|
US1737342A
|
|
Unloading boom for ships and turntable therefor
|
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US1720450A
|
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Unloading boom for ships and support therefor
|
|
US1737341A
|
|
Mixing well for unloading sand boats and the like
|
|
US1737340A
|
|
Centrifugal pump
|
|
US1712312A
|
|
Pump connection
|
|
US1585268A
|
|
Apparatus for unloading boats
|
|
US1507255A
|
|
Method of building dykes
|
|
US1529722A
|
|
Method of excavating and filling
|
|
US1392663A
|
|
Method of depositing sand
|
|
US1337279A
|
|
Method of and apparatus for collecting and delivering sand
|
|
CA270115A
|
|
Boat unloading method
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