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US Patent: 3,464,315
Mechanical pneumatic servo control system for high-speed impact devices
Patentee: Henry A. Weyer (exact or similar names) - Chambersburg, PA USPTO Classifications: 72/19.9, 72/438, 91/165, 91/239, 91/240, 91/244, 91/268, 91/271, 91/308, 91/321 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: Jun. 12, 1967 Granted: Sep. 02, 1969 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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