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US Patent: 157,373
Improvement in hand drilling-machines
Patentee:
John C. Chapman (exact or similar names) - Passaic, NJ

USPTO Classifications:
144/135.3, 408/138, 408/236

Tool Categories:
metalworking machines : drilling and boring

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Jer. Loder
John Farrel
Patent Dates:
Applied: Sep. 14, 1874
Granted: Dec. 01, 1874

Patent Pictures:
USPTO (New site tip)
Google Patents
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