|Publication number||USD621038 S1|
|Application number||US 29/341,359|
|Publication date||Aug 3, 2010|
|Filing date||Aug 4, 2009|
|Priority date||Aug 4, 2009|
|Publication number||29341359, 341359, US D621038 S1, US D621038S1, US-S1-D621038, USD621038 S1, USD621038S1|
|Inventors||Steven J. Maxa, Adam J. Cernohous|
|Original Assignee||3M Innovative Properties Company|
|Export Citation||BiBTeX, EndNote, RefMan|
|Classifications (1) |
|External Links: USPTO, USPTO Assignment, Espacenet|
US D621038 S1
The ornamental design for a grooved piston, as shown and described.
FIG. 1 is a perspective view of a top perspective view showing the new design for a grooved piston;
FIG. 2 is a side elevational view thereof;
FIG. 3 is a top plan view thereof; and,
FIG. 4 is a bottom plan view thereof.
The portions of the grooved piston shown in broken lines form no part of the claimed design.