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US Patent: 1,122,910
Multiple-drilling machine
Patentee:
Robert H. Grant (exact or similar names) - Detroit, MI

USPTO Classifications:
408/108, 470/99

Tool Categories:

Assignees:
Grant Automatic Machine Co. - Detroit, MI

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Sep. 21, 1912
Granted: Dec. 29, 1914

Patent Pictures:
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