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US Patent: 423,951
Tool-shank
Patentee: Martin J. Poindexter (exact or similar names) - Reading, PA USPTO Classifications: 279/102 Tool Categories: industrial tools : tool handles Assignees: None Manufacturer: Unknown Witnesses: F. Pierce Hummel Gatten B. Stevens	Patent Dates: Applied: Dec. 05, 1889 Granted: Mar. 25, 1890 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: This patent date was seen on a screwdriver with the date stamped into the brass ferrule.

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