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The new and ornamental design for a floor maintenance machine, substantially as shown. |
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FIG. 1 is a front perspective view of a floor maintenance machine showing my new design;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a front elevational view thereof;
FIG. 6 is a rear elevational view thereof; and
FIG. 7 is a bottom plan view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Dec 12 1980 | MANNELLY JAMES P | Tennant Company | ASSIGNMENT OF ASSIGNORS INTEREST | 003843 | /0574 | |
| Dec 18 1980 | Tennant Company | (assignment on the face of the patent) | / |
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