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The ornamental design for a ventilating system for toilet bowl, as shown and described.
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FIG. 1 is a perspective view of a ventilating system for toilet bowl embodying the design of the present invention.
FIG. 2 is an front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken line showing of environmental structure in FIG. 1 is for illustrative purposes only and forms no part of the claimed design.
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