US Patent: 47,812 - Improved drill-bit


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

US Patent: 47,812

Improved drill-bit

Patentees:

Robert H. Boyd (exact or similar names) - Hulton, PA

William W. Grier (exact or similar names) - Hulton, PA

USPTO Classifications:

175/391, 175/392, 408/211, 408/224

Tool Categories:

metalworking machines : drilling and boring : drill bits

woodworking tools : hand drills : drill bits

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Robert Hague

A. S. Nicholson

Patent Dates:
Granted:	May 23, 1865

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin

Description:

The 1868-04-18 issue of Scientific American lists an application for reissue of this patent by Horace F. Love of Windsor, VT. He was the assignee of the original inventors.