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

Quick search:	Patent number:	Patent Date:

US Patent: 230,715
Grinding Twist Drills
Patentee: Isaac L. Penney (exact or similar names) - Minneapolis, Hennepin County, MN USPTO Classifications: 451/220, 451/340, 451/375 Tool Categories: metalworking machines : grinders : tool grinders Assignees: Isaac L. Penney - Minneapolis, Hennepin County, MN Edward George Brooks - Minneapolis, Hennepin County, MN Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 26, 1880 Granted: Aug. 03, 1880 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

Copyright © 2002-2024 - DATAMP