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Grooved piston |
| D621036 |
Grooved piston
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| Patent Drawings: | 
(1 images) |
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| Inventor: |
Maxa, et al. |
| Date Issued: |
August 3, 2010 |
| Application: |
D/341,355 |
| Filed: |
August 4, 2009 |
| Inventors: |
Maxa; Steven J. (Burnsville, MN)
Cernohous; Adam J. (River Falls, WI)
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| Assignee: |
3M Innovative Properties Company (St. Paul, MN) |
| Primary Examiner: |
Nelson; T. Chase |
| Assistant Examiner: |
Goodman; Eric L |
| Attorney Or Agent: |
Soo; Philip P. |
| U.S. Class: |
D24/130 |
| Field Of Search: |
D24/112; D24/114; D24/127; D24/128; D24/129; D24/130; 206/363; 206/364; 206/367; 604/54; 604/110; 604/192; 604/263; 604/295 |
| International Class: |
2402 |
| U.S Patent Documents: |
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| Foreign Patent Documents: |
1475430 |
| Other References: |
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| Abstract: |
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| Claim: |
CLAIM The ornamental design for a grooved piston, as shown and described. |
| 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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