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US Patent: 1,858,693
Chuck
Patentee:
Charles E. Van Norman - Springfield, Hampden County, MA

USPTO Classifications:
279/110, 279/139, 279/156, 451/398

Tool Categories:
work holding : vises : chucks

Assignees:
Van Norman Machine Tool Co. - Springfield, Hampden County, MA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 25, 1928
Granted: May 17, 1932

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Van Norman Machine Tool Co.

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