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US Patent: 2,449,459
Perforator Grinding Fixture
Patentee: Theodore Eckert (exact or similar names) - Lincolnwood, Cook County, IL USPTO Classifications: 188/60, 451/387, 451/396, 451/404 Tool Categories: metalworking machines : grinders : grinding attachments Assignees: Harig Mfg. Co. - Chicago, Cook County, IL Manufacturer: Harig Mfg. Co. - Chicago, Cook County, IL Witnesses: none listed	Patent Dates: Applied: Mar. 30, 1946 Granted: Sep. 14, 1948 Patent Pictures: [ 1 | 2 | 3 | 4 | 5 | 6 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Harig Products, Inc. Grind-All #1

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