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US Patent: 140,925
Improvement in metal-drilling machines
Patentee:
Jacob C. Keller - Philadelphia, PA

USPTO Classifications:
144/106, 144/92, 408/236, 408/88, 408/99

Tool Categories:
metalworking machines : drilling and boring : drill presses
woodworking machines : wood drilling and boring : drill presses

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
William A. Steel
Harry Smith

Patent Dates:
Applied: May 24, 1873
Granted: Jul. 15, 1873

Patent Pictures: [ 1 | 2 ]
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