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The ornamental design for a manhole step, as shown. |
FIG. 1 is a perspective view, taken from the upper right front, of a manhole step showing my new design;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a top plan 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 |
Sep 28 1987 | ROBERTSON, MICHAEL K | LANE INTERNATIONAL CORPORATION, 18067 S W LOWER BOONES FERRY RD , TUALATIN, OREGON 97062, A OREGON CORP | ASSIGNMENT OF ASSIGNORS INTEREST | 004803 | /0450 | |
Sep 29 1987 | Lane International Corporation | (assignment on the face of the patent) | / |
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