Patent
   D415774
Priority
Aug 22 1997
Filed
Aug 22 1997
Issued
Oct 26 1999
Expiry
Oct 26 2013
Assg.orig
Entity
unknown
13
4
n/a
The ornamental design for a drill for concrete, as shown and described.

FIG. 1 is a plan view of a drill for concrete in accordance with the present design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is an enlarged sectional view taken along line 5--5 of FIG. 3;

FIG. 6 is an enlarged sectional view taken along the line 6--6 of FIG. 3; and,

FIG. 7 is a bottom view thereof.

A rear view is omitted because it is identical to the front view. A left side view is omitted because it is identical to the right side view.

Wakai, Takao

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Patent Priority Assignee Title
3478639,
5074728, Apr 16 1991 Drill-coexistent screw
5413444, Jan 06 1994 Illinois Tool Works Inc. Self-drilling fastener
D390239, Oct 17 1996 Detachable drill bit and fluted tap
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Aug 22 1997Wakai & Co., Ltd.(assignment on the face of the patent)
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