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US Patent: 244,427
Screw Cutting Device
Patentee:
William L. Bergen (exact or similar names) - Batavia, Kane County, IL

USPTO Classifications:
408/151

Tool Categories:
metalworking tools : taps and dies

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Dec. 13, 1880
Granted: Jul. 19, 1881

Patent Pictures:
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