US Patent: 155,333 - Improvement in expansion-bits


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


Quick search:	Patent number:	Patent Date:

US Patent: 155,333

Improvement in expansion-bits

Patentee:

William L. Parmelee (exact or similar names) - Seymour, CT

USPTO Classifications:

175/384, 175/40, 408/195, 408/212, D15/139

Tool Categories:

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

Assignees:

None

Manufacturer:

Derby Bit Co. - Ansonia, CT

Witnesses:

Edward Brown

Frank Turkington

Patent Dates:
Applied:	Aug. 31, 1874
Granted:	Sep. 22, 1874

Patent Pictures: [ 1 | 2 ]

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

Description:

An example seen on eBay was in a box labeled, "Derby Expansive Bit Patented These Bits Bore From 7-8 To 3 Inches With One Cutter Manufactured By The Derby Bit Co Ansonia Conn".