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US Patent: 1,268,474
Drill Bit
Patentee:
John G. Kilgore - Dayton, TX

USPTO Classifications:
175/227, 175/421

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Mar. 26, 1918
Granted: Jun. 04, 1918

Patent Pictures:
USPTO pdf tiff
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