Step ladder

Details Step ladder Step ladder

2006-05-09

2008-09-02

Clark, Doris (Department: 2914)

Building units and construction elements

Stair, ladder, scaffold, or similar support

Stepped

Design Patent

active

D0576290

CLAIM:
The ornamental design for a step ladder, as shown and described.

REFERENCES:
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patent: 6536557 (2003-03-01), Gibson et al.
patent: 6550579 (2003-04-01), Gibson et al.

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