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US Patent: 307,710
Drilling-machine
Patentee:
Ferdinand J. Dubrul (exact or similar names) - Columbus, OH

USPTO Classifications:
408/98, 409/219, 74/625, 81/34

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:
Henry Olnhausen
Peter Herman

Patent Dates:
Applied: Mar. 07, 1884
Granted: Nov. 04, 1884

Patent Pictures:
USPTO (New site tip)
Google Patents
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