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US Patent: 728,364
Valve Gear for Steam Engines
Patentee: Robert Leon Campbell (exact or similar names) - Tuskegee, Macon County, AL USPTO Classifications: 74/832 Tool Categories: propulsion and energy : steam engines : steam engine valve gear Assignees: Robert Leon Campbell - Tuskegee, Macon County, AL Booker T. Washington - Tuskegee, Macon County, AL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 08, 1902 Granted: May 19, 1903 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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