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The ornamental design for a wattmeter, as shown. |
FIG. 1 is a top, front, and right side elevational view of a wattmeter showing my new design;
FIG. 2 is a top plan view;
FIG. 3 is a rear elevational view;
FIG. 4 is a left side elevational view;
FIG. 5 is a right side elevational view;
FIG. 6 is a front elevational view; and
FIG. 7 is a bottom plan view thereof.
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Patent | Priority | Assignee | Title |
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D246767, | Nov 18 1975 | Electrical measuring instrument | |
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