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US Patent: 257,994
Valve Gear for Steam Engines
Patentees: Robert W. Aitken (exact or similar names) - Buffalo, Erie County, NY David Farquhar (exact or similar names) - Buffalo, Erie County, NY USPTO Classifications: 91/246 Tool Categories: propulsion and energy : steam engines : steam engine valve gear Assignees: Pitts Agricultural Works - Buffalo, Erie County, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 16, 1882 Granted: May 16, 1882 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Buffalo Pitts Co.

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