Drum pump

The ornamental design for a drum pump, substantially as shown.

FIG. 1 is a perspective view taken from the bottom, front and right side of a drum pump showing my new design;

FIG. 2 is another perspective view taken from the top, rear and left side thereof; and

FIG. 3 is a bottom plan view thereof.

Patent	Priority	Assignee	Title
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10000,
115814,

Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Dec 13 1978		Le-Cas Limited	(assignment on the face of the patent)

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