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The ornamental design for a stair step for a platform, as shown and described. |
FIG. 1 is a front elevational view of a stair step for a platform showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a right side elevational view, the left side being a mirror image thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a perspective view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Dec 04 1989 | EICKHOFF, JON H | RONNINGEN RESEARCH & DEVELOPMENT COMPANY, 6700 EAST YZ AVENUE, VICKSBURG, MICHIGAN 49097, A CORP OF MI | ASSIGNMENT OF ASSIGNORS INTEREST | 005189 | /0343 | |
Dec 06 1989 | Ronningen Research & Development Company | (assignment on the face of the patent) | / | |||
Nov 29 1990 | RONNINGEN RESEARCH AND DEVELOPMENT COMPANY, A CORP OF MI | NBD BUSINESS FINANCE, INC , A DE CORP | SECURITY INTEREST SEE DOCUMENT FOR DETAILS | 005587 | /0575 |
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