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US Patent: 1,740,055
Expansive bit
Patentee:
John Herbert Abramson (exact or similar names) - Rockford, IL

USPTO Classifications:
408/181

Tool Categories:
woodworking tools : hand drills : drill bits : adjustable drill bits

Assignees:
Greenlee Brothers & Co. - Rockford, IL

Manufacturer:
Greenlee Brothers & Co. - Rockford, IL

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 12, 1928
Granted: Dec. 17, 1929

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Greenlee Brothers & Co.

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