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The ornamental design for the air operated piston pump, as shown and described. |
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FIG. 1 is a front elevation view of the air operated piston pump;
FIG. 2 is a top elevation view thereof;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a back elevation view thereof; and,
FIG. 6 is a bottom elevation view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Aug 18 2000 | Graco Minnesota Inc. | (assignment on the face of the patent) | / | |||
| Aug 18 2000 | BAUCK, MARK L | Graco Minnesota Inc | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 011131 | /0004 |
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