Device for displaying the direction of thrust of hydraulically controlled controllable pitch propellers
GB993919A
Improvements in pressure-increasing devices for water conduit systems
GB925830A
Improvements in propulsion units for watercraft
DE1137628B
Diaphragm piston pump for pumping from deep boreholes with a working fluid enclosed between the pumping diaphragm and the pump piston, the quantity of which is regulated by a control piston
GB952843A
Submersible electric motor driven pump assembly
DE1200687B
Diaphragm pumps, especially submersible pumps for pumping out of deep boreholes
DE1095123B
Submersible pump with diaphragm piston drive
DE1031640B
Diaphragm piston pump
GB780568A
Improvements in or relating to diaphragm pumps
GB801902A
Improvements in or relating to diaphragm pumps
US2818818A
Pumping equipment
US2814253A
Pumping equipment for viscous liquids
US2869474A
Diaphragm piston pump
DE1038669B
Method and device for determining boundary layers between fluids stored in layers, in particular in oil wells
DE968359C
High-pressure piston pump driven by an electric motor, in particular for pumping fluids from deep boreholes
