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US Patent: 2,464,156
Expanding Chuck or Mandrel
Patentees:
Gerald L. Sandersen - Essex, Middlesex County, CT
Karl K. Nielsen - Essex, Middlesex County, CT
Colin Campbell - Essex, Middlesex County, CT

USPTO Classifications:
279/2.03, 279/2.12, 82/161

Tool Categories:
work holding : vises : metalworking machine vises

Assignees:
Gerald L. Sandersen - Essex, Middlesex County, CT

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 20, 1946
Granted: Mar. 08, 1949

Patent Pictures:
USPTO pdf tiff
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