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The ornamental design for portable vibrating chisel, as shown. |
FIG. 1 is a top, front and right-side perspective view of a portable vibrating chisel showing my new design;
FIG. 2 is a right side elevational view;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view;
FIG. 5 is a front elevational view;
FIG. 6 is a rear elevational view; and,
FIG. 7 is a left side elevational view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Dec 12 1990 | MIKIYA, TOSHIO | NITTO KOHKI CO , LTD, | ASSIGNMENT OF ASSIGNORS INTEREST | 005564 | /0979 | |
Dec 26 1990 | Nitto Kohki Co., Ltd. | (assignment on the face of the patent) | / |
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