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The ornamental design for a retractor for heart valve surgery substantially, as shown and described. |
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FIG. 1 is a front isometric view of a retractor for heart valve surgery according to the invention showing our new design.
FIG. 2 is a rear isometric view thereof.
FIG. 3 is a front elevational view thereof.
FIG. 4 is a right side elevational view thereof.
FIG. 5 is a rear elevational view thereof.
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
Koros, Tibor B., Koros, Gabriel J.
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