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US Patent: 423,951
Tool-shank
Patentee:
Martin J. Poindexter - Reading, PA

USPTO Classifications:
279/102

Tool Categories:
industrial tools : tool handles
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 pdf tiff
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Description:
This patent date was seen on a screwdriver with the date stamped into the brass ferrule.

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