Patent
   D326159
Priority
Dec 06 1989
Filed
Dec 06 1989
Issued
May 12 1992
Expiry
May 12 2006
Assg.orig
Entity
unknown
1
5
n/a
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.

Eickhoff, Jon H.

Patent Priority Assignee Title
D385970, Jan 22 1996 Waterair Industries Prefabricated step unit for swimming pools
Patent Priority Assignee Title
3130814,
330963,
3826336,
4034829, Jun 21 1976 Step stool
4753320, Apr 22 1987 Convertable step stool
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Dec 04 1989EICKHOFF, JON H RONNINGEN RESEARCH & DEVELOPMENT COMPANY, 6700 EAST YZ AVENUE, VICKSBURG, MICHIGAN 49097, A CORP OF MIASSIGNMENT OF ASSIGNORS INTEREST 0051890343 pdf
Dec 06 1989Ronningen Research & Development Company(assignment on the face of the patent)
Nov 29 1990RONNINGEN RESEARCH AND DEVELOPMENT COMPANY, A CORP OF MINBD BUSINESS FINANCE, INC , A DE CORP SECURITY INTEREST SEE DOCUMENT FOR DETAILS 0055870575 pdf
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