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US Patent: 1,698,394
Boring device
Patentee: Emery E. Davis (exact or similar names) - St. Louis, MO USPTO Classifications: 408/138 Tool Categories: trade specific : vehicle repairer : vehicle mechanic : cylinder maintenance Assignees: Davis Boring Tool Co. - St. Louis, MO Manufacturer: Davis Boring Tool Co. - St. Louis, MO Witnesses: Unknown	Patent Dates: Applied: May 31, 1923 Granted: Jan. 08, 1929 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Davis Boring Tool Co.

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