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US Patent: 28,279
Screw Plate
Patentee:
Zalmon L. Jacobs (exact or similar names) - Hebron, Tolland County, CT

USPTO Classifications:
408/182, 408/188, 470/134

Tool Categories:
metalworking tools : tap and die holders

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: May 15, 1860

Patent Pictures:
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