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US Patent: 1,510,219
Auger Guide
Patentee:
Roswell B. Harding - Buckley, WA

USPTO Classifications:
33/474, 33/534, 408/115R, 408/241G

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 17, 1923
Granted: Sep. 30, 1924

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
Square with two angle brackets clamped together to assist in boring straight holes.

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