Toy staircase

- Interlego A.G.
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Description

FIG. 1 is a top perspective view of a toy staircase showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a side elevational view thereof, the opposite side being a mirror image.

Referenced Cited
U.S. Patent Documents
D233750 November 1974 Bryan
D295644 May 10, 1988 Takahashi
D295646 May 10, 1988 Knudsen
3175654 March 1965 Calvert
Patent History
Patent number: D309641
Type: Grant
Filed: Nov 29, 1988
Date of Patent: Jul 31, 1990
Assignee: Interlego A.G. (Baar)
Inventor: Flemming H. Olsen (Espergaerde)
Primary Examiner: Charles A. Rademaker
Law Firm: Kane, Dalsimer, Sullivan, Kurucz, Levy, Eisele and Richard
Application Number: 7/277,905
Classifications
Current U.S. Class: D21/109