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US Patent: 491,316
Tool Holder
Patentees: James E. Low (exact or similar names) - Chicago, Cook County, IL Magus Dahl (exact or similar names) - Chicago, Cook County, IL USPTO Classifications: 279/51, 433/129 Tool Categories: specialty machines : dental apparatus Assignees: James E. Low - Chicago, Cook County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 22, 1890 Granted: Feb. 07, 1893 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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