Claims (1)
Claim 1 (Independent)
I claim the ornamental design for a check valve, as shown and described.
Full Description
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is a rear perspective view of the check valve;
is a front perspective view thereof;
is a top plan view thereof, the bottom plan view being identical thereto;
is a right side elevational view thereof, the left side elevational view being identical thereto;
is a rear elevational view thereof; and,
is a front elevational view thereof.
The broken lines illustrate portions of the check valve which form no part of the claimed design.
Figures (4)
Citations
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