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US Patent: 2,741,077
Clamping devices
Patentee: Ermon F. Ayer (exact or similar names) - North Haven, CT USPTO Classifications: 451/367, 451/370 Tool Categories: work holding : sharpening jigs and fixtures Assignees: General Hardware Mfg. Co., Inc. - New York, NY Manufacturer: General Hardware Mfg. Co., Inc. - New York, NY Witnesses: Unknown	Patent Dates: Applied: Jan. 14, 1955 Granted: Apr. 10, 1956 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for General Hardware Mfg. Co., Inc.
Description: This chisel- and plane-blade-sharpening jig offers improved clamping means intended to avoid movement of the cutter as the clamp is tightened.

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