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The ornamental design for a cleaning machine, as shown and described. |
FIG. 1 is a front perspective view of a cleaning machine showing my new design;
FIG. 2 is a front elevational view;
FIG. 3 is a left side elevational view;
FIG. 4 is a right side elevational view;
FIG. 5 is a rear elevational view;
FIG. 6 is a top plan view; and
FIG. 7 is a bottom plan view.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Feb 20 1988 | WULFF, RICHARD F | CASTEX INDUSTRIES, INC | ASSIGNMENT OF ASSIGNORS INTEREST | 004845 | /0944 | |
Feb 29 1988 | Castex Industries, Inc. | (assignment on the face of the patent) | / | |||
Jun 02 1994 | CASTEX INDUSTRIES, INC | Castex Incorporated | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007023 | /0469 | |
Nov 27 2000 | Castex Incorporated | Tennant Company | MERGER SEE DOCUMENT FOR DETAILS | 011751 | /0434 |
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