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US Patent: 1,791,532
Semiautomatic Drill and Tapping Jig
Patentees:
Eugene L. Oberly (exact or similar names) - Chicago, Cook County, IL
Henry Hansen (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:
408/97, 470/98

Tool Categories:
metalworking tools : jigs and fixtures
metalworking machines : drilling and boring : tapping machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 11, 1924
Granted: Feb. 10, 1931

Patent Pictures:
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