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US Patent: 1,342,128
Injector
Patentees: James Metcalfe (exact or similar names) - Marple, England Richard David Metcalfe (exact or similar names) - Romiley, England USPTO Classifications: 417/167 Tool Categories: propulsion and energy : steam apparatus : water injectors propulsion and energy : steam apparatus : stationary boilers : feedwater apparatus Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 06, 1919 Granted: Jun. 01, 1920 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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