Patent
   D466139
Priority
Nov 16 2001
Filed
Nov 16 2001
Issued
Nov 26 2002
Expiry
Nov 26 2016
Assg.orig
Entity
unknown
31
5
n/a
The ornamental design for a core drill, as shown and described.

FIG. 1 is a perspective view of the core drill;

FIG. 2 is a front view thereof; (the rear view thereof is a mirror image of this)

FIG. 3 is a left side view thereof; (the right side view thereof is a mirror image of this)

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a cross-sectional view of the core drill of FIG. 1 taken along section line 6--6.

Kim, See Hyung, Chang, Joon Ho

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Patent Priority Assignee Title
4208154, Mar 21 1978 Core drill
5996571, Feb 01 1996 Diamond Products Joint Venture Diamond core drill bit
6033295, Dec 28 1994 Norton Company Segmented cutting tools
D342270, Sep 29 1992 EHWA Diamond Ind. Co., Ltd. Core drill for perforating stone
KR9317454,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Nov 08 2001KIM, SEE HYUNGEHWA DIAMOND INDUSTRIAL CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0123210083 pdf
Nov 08 2001CHANG, JOON HOEHWA DIAMOND INDUSTRIAL CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0123210083 pdf
Nov 16 2001Ehwa Diamond Industrial Co., Ltd.(assignment on the face of the patent)
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