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The ornamental design for a core drill for perforating stone, as shown and described. |
FIG. 1 is a front elevation view of a core drill for perforating stone showing my new design;
FIG. 2 is a left side elevation view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a rear elevation view thereof; and,
FIG. 6 is a perspective view thereof.
A right side elevation view thereof is omitted since it is the same one as a left side elevation view.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Sep 08 1992 | KIM, SOO K | EHWA DIAMOND IND CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 006266 | /0428 | |
Sep 29 1992 | EHWA Diamond Ind. Co., Ltd. | (assignment on the face of the patent) | / |
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