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The ornamental design for an internal combustion engine for technical models, as shown and described. |
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FIG. 1 is a perspective view of an internal combustion engine showing my new design;
FIG. 2--is a front elevational view thereof;
FIG. 3--is a rear elevational view thereof;
FIG. 4--is a right side elevational view thereof;
FIG. 5--is a left side elevational view thereof;
FIG. 6--is a top plan view thereof;
FIG. 7--is a bottom plan view thereof.
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