Woodworking drill bit

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Description

FIG. 1 is a perspective view of a woodworking drill bit showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a perspective enlarged view of a lower section shown in the circle in FIG. 1.

Claims

The ornamental design for a woodworking drill bit, as shown and described.

Referenced Cited
U.S. Patent Documents
302595 July 1884 Shaler
404197 May 1889 Iriwin
413972 October 1889 Shaler
772211 October 1904 Campbell
1244593 October 1917 Doldt
2035298 March 1936 Caldwell
2627292 February 1953 Kronwall
3977807 August 31, 1976 Siddall
4210215 July 1, 1980 Peetz et al.
5697738 December 16, 1997 Stone et al.
5842267 December 1, 1998 Biederman et al.
D408424 April 20, 1999 Schmotzer
D419576 January 25, 2000 Burcher et al.
D504446 April 26, 2005 Kobayashi
D544892 June 19, 2007 Watson et al.
D559874 January 15, 2008 Kobayashi
20080138165 June 12, 2008 Durfee
20080166194 July 10, 2008 Durfee
20080193236 August 14, 2008 Durfee
Patent History
Patent number: D585920
Type: Grant
Filed: Jun 11, 2008
Date of Patent: Feb 3, 2009
Inventors: Chung-Liang Liao (Feng Yuan City, Taichung Hsien), Chung-Hung Liao (Feng Yuan City, Taichung Hsien)
Primary Examiner: Sandra Snapp
Assistant Examiner: Patricia Palasik
Attorney: Rosenberg, Klein & Lee
Application Number: 29/309,007
Classifications