Grooved piston
Maxa , et al. August 3, 2
U.S. patent number D621,038 [Application Number D/341,359] was granted by the patent office on 2010-08-03 for grooved piston. This patent grant is currently assigned to 3M Innovative Properties Company. Invention is credited to Adam J. Cernohous, Steven J. Maxa.
| United States Patent | D621,038 |
| Maxa , et al. | August 3, 2010 |
Grooved piston
Claims
CLAIM The ornamental design for a grooved piston, as shown and described.
| Inventors: | Maxa; Steven J. (Burnsville, MN), Cernohous; Adam J. (River Falls, WI) |
|---|---|
| Assignee: | 3M Innovative Properties
Company (St. Paul, MN) |
| Appl. No.: | D/341,359 |
| Filed: | August 4, 2009 |
| Current U.S. Class: | D24/130 |
| Current International Class: | 2402 |
| Field of Search: | ;D24/112,114,127-130 ;206/363-364,367 ;604/54,110,192,263,295 |
References Cited [Referenced By]
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Assistant Examiner: Goodman; Eric L
Attorney, Agent or Firm: Soo; Philip P.
Description
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.
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