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The ornamental design for the double diaphragm pump, as shown and described
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FIG. 1 is a front elevation view of the double diaphragm pump;
FIG. 2 is a rear elevation view thereof;
FIG. 3 is a left side elevation view thereof and is a mirror image of the right side;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a front perspective view thereof.
Feitel, Ann C., Fisher, Joel T.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Feb 12 1996 | Graco Inc. | (assignment on the face of the patent) | / |
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