|
US1701078A
|
|
Thrust bearing and aligning method
|
|
US1500829A
|
|
Method of forming well screens
|
|
US1462708A
|
|
Movable power unit
|
|
US1494491A
|
|
Suspension means for pumping apparatus
|
|
US1497919A
|
|
Perforating tool
|
|
US1491149A
|
|
Thrust bearing
|
|
US1491148A
|
|
Thrust bearing
|
|
US1490280A
|
|
Well apparatus and method of installation
|
|
US1435400A
|
|
Electric drive mechanism for rotary well pumps
|
|
US1499382A
|
|
Well screen
|
|
US1453847A
|
|
Well mechanism
|
|
US1299741A
|
|
Well apparatus.
|
|
US1382295A
|
|
Apparatus for separating and collecting fluids in wells
|
|
US1366087A
|
|
Well-screen
|
|
US1328438A
|
|
Well-screen
|
|
US1286666A
|
|
Method of collecting and pumping water.
|
|
US1339898A
|
|
Well-screen
|
|
US1266831A
|
|
Well-boring rod.
|
|
US1360540A
|
|
Packer
|
|
US1273236A
|
|
Well-screen.
|
