Drill bit
Description
FIG. 1 is a side view of the drill bit showing the novel design;
FIG. 2 is a top view thereof; and
FIG. 3 is a bottom view thereof.
Referenced Cited
Patent History
Patent number: D262630
Type: Grant
Filed: Jan 19, 1979
Date of Patent: Jan 12, 1982
Assignee: Robert W. Lee (Oklahoma City, OK)
Inventor: Clifford K. Logan, Jr. (Oklahoma City, OK)
Primary Examiner: Veronica O'Keefe
Attorney: C. Clark Dougherty, Jr.
Application Number: 6/4,687
Type: Grant
Filed: Jan 19, 1979
Date of Patent: Jan 12, 1982
Assignee: Robert W. Lee (Oklahoma City, OK)
Inventor: Clifford K. Logan, Jr. (Oklahoma City, OK)
Primary Examiner: Veronica O'Keefe
Attorney: C. Clark Dougherty, Jr.
Application Number: 6/4,687
Classifications
Current U.S. Class:
Cutting Tool, E.g., Drill Bit, Etc. (D15/139);
Element Or Attachment (D15/138);
Face Or End Mill (407/53);
With Cutting Edge Entirely Across End Of Tool (e.g., Router Bit, End Mill, Etc.) (407/54);
Tool Or Tool With Support (408/199);
With Lateral Outlet (408/205);
Having Product-receiving Chamber (408/207);
With Axially Extending Relief Channel (408/229);
Cutting Edge Self-renewable During Operation (175/379);
With Core-breaking Means (175/404);
175/409;
Rolling Cutter Bit Or Rolling Cutter Bit Element (175/331)
International Classification: D1599;
International Classification: D1599;
