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US Patent: 166,758
Rotary Balanced Valve
Patentee: Chilton M. Farrar (exact or similar names) - Buffalo, Erie County, NY USPTO Classifications: 137/625.22 Tool Categories: propulsion and energy : steam engines : steam engine valves Assignees: None Manufacturer: Farrar & Trefts - Buffalo, Erie County, NY Witnesses: James Sangster William S. Grosvenor Amos W. Sangster	Patent Dates: Applied: Jun. 21, 1875 Granted: Aug. 17, 1875 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Farrar & Trefts
Description: James Sangster patent attorney.

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