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US Patent: 841,207
Reducing Wheel
Patentee: Frank L. Wolfe (exact or similar names) - Medford, Middlesex County, MA USPTO Classifications: 74/141 Tool Categories: propulsion and energy : steam apparatus : steam engine indicators : reducing wheels Assignees: Crosby Steam Gage & Valve Co. - Boston, Suffolk County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 27, 1905 Granted: Jan. 15, 1907 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens The Story of the Steam Engine Indicator "Vintage Machinery" entry for Crosby Steam Gage & Valve Co.

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