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The ornamental design for a diaphragm pump, as shown and described.
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FIG. 1 shows a front view of a diaphragm pump showing my new design;
FIG. 2 shows a top view thereof;
FIG. 3 shows a bottom view thereof;
FIG. 4 shows a right side view thereof
FIG. 5 shows a left side view thereof;
FIG. 6 shows an inside view thereof taken along line 6--6 on FIG. 1; and,
FIG. 7 shows a perspective view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Feb 06 2004 | SMC Corporation | (assignment on the face of the patent) | / | |||
| Apr 21 2004 | IWATA, TOMOYUKI | SMC Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 014698 | /0285 |
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