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US Patent: 131,074
Rock drill
Patentee:
A. E. Allen (exact or similar names) - Perch River, NY

USPTO Classifications:
74/37

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
I. S. Sargent
Edward B. Sterling
Patent Dates:
Granted: Sep. 03, 1872

Patent Pictures:
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