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US Patent: 229,008
Hand-screw
Patentee:
Charles F. Pettingell - Salisbury, MA

USPTO Classifications:
269/176

Tool Categories:
work holding : clamps : hand screws

Assignees:
None

Manufacturer:
C. F. Pettingell - Amesbury, MA

Witnesses:
William S. Clarkson
Joseph T. Clarkson

Patent Dates:
Applied: Oct. 06, 1879
Granted: Jun. 22, 1880

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for C. F. Pettingell

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