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US Patent: 2,578,884
Work holder for grinding router bits
Patentee: Lee C. Hammond (exact or similar names) - Kalamazoo, MI USPTO Classifications: 451/159, 451/374 Tool Categories: Assignees: Hammond Machinery Builders, Inc. - Kalamazoo, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 04, 1949 Granted: Dec. 18, 1951 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hammond Machine Co.
Description: This machine is intended for carving cutters used in preparing printing plates.

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