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US Patent: 1,604,776
Valve
Patentee: Franklin Hardinge (exact or similar names) - Chicago, IL USPTO Classifications: 137/242, 251/249.5, 251/360 Tool Categories: specialty machines : industrial furnaces Assignees: Hardinge Brothers, Inc. - Chicago, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 02, 1921 Granted: Oct. 26, 1926 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hardinge Brothers

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