|
US1179122A
|
|
Reticulated revetment.
|
|
US1179121A
|
|
Revetment composed of flanged units.
|
|
US1154867A
|
|
Concrete revetment.
|
|
US1144144A
|
|
Revetment.
|
|
US1148915A
|
|
Revetment.
|
|
CA156880A
|
|
Levee embankment, dam, etc.
|
|
US1144143A
|
|
Revetment.
|
|
US1112018A
|
|
Protection of levees, embankments, dams, and other natural or artificial structures.
|
|
GB190908544A
|
|
Improvements in or relating to Hydraulic Valves.
|
|
US929238A
|
|
Valve device.
|
|
GB190725855A
|
|
Improvements in and relating to Appliances for Cleaning the Internal Surfaces of Tubes in Multitubular Boilers or other Steam Generators.
|
|
GB190612457A
|
|
Improvements in and relating to Appliances for Cleaning Tubes and the like
|
|
CA92465A
|
|
Valve
|
|
US781897A
|
|
Valve device.
|
