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US Patent: 1,758,069
Bit Extension
Patentee:
John Herbert Abramson (exact or similar names) - Rockford, IL

USPTO Classifications:
279/90

Tool Categories:
woodworking tools : hand drills : drill bit extensions

Assignees:
Greenlee Bros. & Co. - Rockford, IL

Manufacturer:
Greenlee Bros. & Co. - Rockford, IL

Witnesses:
Unknown

Patent Dates:
Applied: Jan. 25, 1928
Granted: May 13, 1930

Patent Pictures:
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