Precision screwdriver

Chi November 18, 2

Patent Grant D580722

U.S. patent number D580,722 [Application Number D/250,172] was granted by the patent office on 2008-11-18 for precision screwdriver. Invention is credited to Li-Lien Chi.


United States Patent D580,722
Chi November 18, 2008

Precision screwdriver

Claims

CLAIM The ornamental design for a precision screwdriver, as shown and described.
Inventors: Chi; Li-Lien (Taichung County 414, TW)
Appl. No.: D/250,172
Filed: November 6, 2006

Current U.S. Class: D8/61
Current International Class: 0805
Field of Search: ;D8/67,62,61,70,82 ;D4/102 ;81/177.4,181 ;409/181 ;173/217,178 ;451/344

References Cited [Referenced By]

U.S. Patent Documents
4721169 January 1988 Nagasawa et al.
D303205 September 1989 Gierke et al.
D304543 November 1989 Somers et al.
D308622 June 1990 Fushiya et al.
D341531 November 1993 Nagano et al.
5310010 May 1994 Lo
D380658 July 1997 Bruno et al.
D391820 March 1998 Bunyea
D418729 January 2000 Snider
D423897 May 2000 Cooper
D466776 December 2002 Hsiao
D467146 December 2002 Chunn et al.
D470374 February 2003 Murray
D472779 April 2003 Chunn et al.
D474086 May 2003 Heun
D487383 March 2004 Ng
D491031 June 2004 Davis et al.
6817424 November 2004 Su et al.
D502071 February 2005 Snider
7021181 April 2006 Chi
7305908 December 2007 Chi
2005/0152759 July 2005 Allemann et al.
2007/0227312 October 2007 Chi
Primary Examiner: Brooks; Cathron
Assistant Examiner: Murphy; Austin
Attorney, Agent or Firm: Shia; Banger

Description



FIG. 1 is a perspective view of a precision screwdriver showing my 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 top plan view thereof; and

FIG. 7 is a bottom plan view to that shown; and,

FIG. 8 is a perspective view of a precision screwdriver.

The broken lines shown in the drawings form no part of the claimed design.

* * * * *


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