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			 The ornamental design for a spa, substantially as shown and described.  | 
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FIG. 1 is a front, top perspective view of a spa showing our new design;
FIG. 2 is a back top perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a back elevational view thereof;
FIG. 6 is a front elevational view thereof;
FIG. 7 is a right side elevational view thereof; and
FIG. 8 is a left side elevational view thereof.
Willich, Robert V., Morrow, Robert
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| D433510, | Apr 05 1999 | Jason International, Inc. | Whirlpool bath | 
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| Patent | Priority | Assignee | Title | 
| D245542, | Jan 18 1974 | NEMCO ACQUISITION CO , A FLORIDA CORP ; UNION BANK, 445 SOUTH FIGUEROA STREET, LOS ANGELES, CALIFORNIA | Bathing pool | 
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