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US Patent: 21,567
Machine for Cutting Metal Bars
Patentee:
Daniel R. Knowles - Center Groton, New Haven County, CT

USPTO Classifications:
409/327

Tool Categories:
metalworking machines : metal shears

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Sep. 21, 1858

Patent Pictures:
USPTO pdf tiff
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