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The ornamental design for a rock anchor, as shown and described. |
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FIG. 1 is a perspective view of a rock anchor showing my new design;
FIG. 2 is a front side view thereof, the rear being a mirror image;
FIG. 3 is a right side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Sep 18 1984 | MACKARVICH, CHARLES J | TIE DOWN ENGINEERING, INC , A GA CORP | ASSIGNMENT OF ASSIGNORS INTEREST | 004320 | /0638 | |
| Sep 28 1984 | Tie Down Engineering, Inc. | (assignment on the face of the patent) | / |
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