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US Patent: 762,406
Valve
Patentee: Stephen S. Herrick (exact or similar names) - San Francisco, CA USPTO Classifications: 137/540.11 Tool Categories: propulsion and energy : steam engines : steam engine valves Assignees: Vulcan Iron Works (San Francisco) - San Francisco, CA Manufacturer: Not known to have been produced Witnesses: Henry C. Droget Walter F. Vane	Patent Dates: Applied: Feb. 05, 1904 Granted: Jun. 14, 1904 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Vulcan Iron Works (San Francisco)

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