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US Patent: 3,566,747
Self-regulating expansion type control valve
Patentee: Charles W. Frame (exact or similar names) - Chambersburg, PA USPTO Classifications: 91/35, 91/426 Tool Categories: metalworking machines : forging machines : drop hammers Assignees: Chambersburg Engineering Co. - Chambersburg, PA Manufacturer: Chambersburg Engineering Co. - Chambersburg, PA Witnesses: Unknown	Patent Dates: Applied: Feb. 14, 1969 Granted: Mar. 02, 1971 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Chambersburg Engineering Co.

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