Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 21,160
Variable-Boring Bit
Patentee:
William Tucker - Gloucester, RI

USPTO Classifications:
408/213

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Henry Martin
Albert M. Hewitt

Patent Dates:
Granted: Aug. 10, 1858

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
Eccentric cutter provides capacity for the bit to bore holes of various sizes.

Copyright © 2002-2017 - DATAMP