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The ornamental design for a relief valve, as shown and described. |
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FIG. 1 is a plan view from above;
FIG. 2 is a oblique view from below;
FIG. 3 is a plan view from below;
FIG. 4 is a oblique view from above;
FIG. 5 end view; and,
FIG. 6 elevational view from side.
Stahle, Manfred, Kallenbach, Dieter H. F.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Apr 23 1998 | KALLENBACH, DIETER HANS FRIEDRICH | Corrupipe CC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 009319 | /0334 | |
| Apr 23 1998 | STAHLE, MANFRED | Corrupipe CC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 009319 | /0334 | |
| May 22 1998 | Corrupipe CC | (assignment on the face of the patent) | / |
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