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US Patent: 120,716
Improvement in boring-machines
Patentee:
George F. Cluff (exact or similar names) - Petersburg, IL

USPTO Classifications:
292/DIG.035, 408/135, 408/138

Tool Categories:
metalworking machines : drilling and boring

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Isaac A. Tyler
R. Van Deusen
Patent Dates:
Granted: Nov. 07, 1871

Patent Pictures:
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