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			 The ornamental design for a battery operated vacuum cleaner, as shown.  | 
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FIG. 1 is a rear elevational view of a battery operated vacuum cleaner, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof; and
FIG. 7 is a top, front, left side perspective view thereof.
| Patent | Priority | Assignee | Title | 
| D462488, | Nov 14 2001 | BISSELL Homecare, Inc. | Extraction cleaner | 
| D812826, | Sep 07 2016 | Emerson Electric Co | Vacuum cleaner | 
| Patent | Priority | Assignee | Title | 
| 173441, | |||
| 212710, | |||
| D261267, | Jul 01 1978 | Rommag P. Worwag & Co. | Vacuum cleaner | 
| D270298, | Jan 29 1981 | Sharp Corporation | Vacuum cleaner | 
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