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US Patent: 1,225,191
Automatic center-punch
Patentee:
Charles L. Throckmorton (exact or similar names) - San Francisco, CA

USPTO Classifications:
33/674

Tool Categories:
punches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Sep. 23, 1914
Granted: May 08, 1917

Patent Pictures:
USPTO (New site tip)
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