Air pump for condensers
Air-lift pump with scalloped air-liberation rings, at two...
Air-pressure actuated slurry pump
Airlift
An oil diffusion pump comprising a baffle device
Apparatus and method for dredging in deep ocean
Apparatus and method for handling solids in liquid
Apparatus for continuously circulating a liquid
Apparatus for continuously transferring a slurry by liquid...
Apparatus for emptying a hazardous waste container
Apparatus for producing a vacuum
Apparatus for vacuum absorption
Aspirator
Attenuation of water waves and control and utilization of...
Automatic auxiliary jet sump pump
Automatic pneumatic pump