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US Patent: 937,993
Engine Governor
Patentee: Stephen S. Hall (exact or similar names) - Portland, Middlesex County, CT USPTO Classifications: 403/81, 73/543, 74/586 Tool Categories: propulsion and energy : steam engines : steam engine governors Assignees: Pickering Governor Co. - Portland, Middlesex County, CT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 17, 1909 Granted: Oct. 26, 1909 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Pickering Governor Co.

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