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GB Patent: GB-185,800,117
Improvement in valves for steam-engines and in super-heating the steam
Patentees: J. Cheetham (exact or similar names) - Oldham, England William Blackett Haigh (exact or similar names) - Oldham, England USPTO Classifications: Tool Categories: propulsion and energy : steam engines : steam engine valves Assignees: None Manufacturer: W. B. Haigh & Co., Ltd. - Oldham, county Lancaster, England Witnesses: Unknown	Patent Dates: Granted: Jan. 22, 1858 Patent Pictures: Espacenet patent Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for W. B. Haigh & Co., Ltd.

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