Patent
   D515590
Priority
Jan 13 2004
Filed
Jan 13 2004
Issued
Feb 21 2006
Expiry
Feb 21 2020
Assg.orig
Entity
unknown
20
26
n/a
The ornamental design for a pump valve piston, as shown and described.

FIG. 1 is a perspective view of my pump valve piston;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a sectional view taken generally along sectional lines 8—8 of FIG. 4; and,

FIG. 9 is a section view taken generally along sectional lines 9—9 of FIG. 4.

Freitas, Michael W.

Patent Priority Assignee Title
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Jan 08 2004FREITAS, MICHAEL W DISPENSER SERVICES OF TEXAS, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0148890879 pdf
Jan 13 2004Dispenser Services of Texas, Inc.(assignment on the face of the patent)
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