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"The Zoelly turbine has been developed rather extensively abroad, and is being manufactured largely through a syndicate of builders including some American firms. It is a turbine essentially of the Rateau type, a multi—pressure—stage turbine, but it has fewer stages, usually not over ten for condensing and five for non—condensing." —Derr, 1911

Zoelly Condensing Turbine Electric Generator

"The Zoelly turbine has been developed rather extensively abroad, and is being manufactured largely…