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US Patent: 1,045,630
Unidirectional-flow steam-engine
Patentee: Johan Stumpf (exact or similar names) - Berlin, Germany USPTO Classifications: 91/184, 91/185, 91/268, 91/272, 91/325, 92/181R Tool Categories: propulsion and energy : steam engines Assignees: None Manufacturer: Ridgway Dynamo & Engine Co. - Ridgway, PA Witnesses: Woldemar Haupt Joseph Heppa	Patent Dates: Applied: Dec. 13, 1910 Granted: Nov. 26, 1912 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Ridgway Dynamo & Engine Co.
Description: This is the first patent for the Stumps Uni-Flow steam engine. See patent 1,285,475 for more information.

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